W/IMediaDeathNotifier﹕ media server died - audio

I'm trying to record audio using Google Glass MIC but I keep getting W/IMediaDeathNotifier﹕ media server died error. Thoughts?
It should start recording on the first touch and stops on the second touch, but the error happens on the first click.
package com.google.android.glass.sample.charades;
import android.media.MediaRecorder;
import java.io.IOException;
import android.util.Log;
import android.os.Environment;
public class SlideshowActivity extends Activity {
private static final String LOG_TAG = "AudioRecordTest";
private MediaRecorder mRecorder = null;
private static String mFileName = Environment.getExternalStorageDirectory().getAbsolutePath() + "/audiorecordtest.3gp";
private boolean recording = false;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_slideshow);
mGestureDetector = new GestureDetector(this).setBaseListener(mBaseListener);
}
private void startRecording() {
mRecorder = new MediaRecorder();
mRecorder.setAudioSource(MediaRecorder.AudioSource.MIC);
mRecorder.setOutputFormat(MediaRecorder.OutputFormat.THREE_GPP);
mRecorder.setOutputFile(mFileName);
mRecorder.setAudioEncoder(MediaRecorder.AudioEncoder.DEFAULT);
Log.e(LOG_TAG, "File name: " + mFileName);
try {
mRecorder.prepare();
} catch (IOException e) {
Log.e(LOG_TAG, "prepare() failed");
}
mRecorder.start();
}
private void stopRecording() {
mRecorder.stop();
mRecorder.release();
mRecorder = null;
}
private void onRecord(boolean start) {
if (start) {
startRecording();
} else {
stopRecording();
}
}
}
Log:
4242-4242/com.google.android.glass.sample.charades E/AudioRecordTest﹕ File name: /storage/emulated/0/audiorecordtest.3gp
4242-4255/com.google.android.glass.sample.charades W/IMediaDeathNotifier﹕ media server died
I've also added the following permission on the AndroidManifest.xml file:
<uses-permission android:name="android.permission.RECORD_AUDIO" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.CAPTURE_AUDIO_OUTPUT" />

Try calling setPreviewDisplay, it isn't noted anywhere but some people say the preview is used as source to store the video file.
http://developer.android.com/reference/android/media/MediaRecorder.html#setPreviewDisplay(android.view.Surface)

I similar this on audio record.
Fix: change format recorder
mRecorder.setOutputFormat(MediaRecorder.OutputFormat.AAC_ADTS);
mRecorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB);
Change example:
mRecorder.setOutputFormat(MediaRecorder.OutputFormat.THREE_GPP);
mRecorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB);

Related

Encrypted Bluetooth chat communication

Having issues with the app, shuts down any time I click on the chat button. I just submitted my manifest, gradle , xml, and the mainactivity to check what really went wrong. Thanks
I have an error from the logcat
GoldfishAddressSpaceHostMemoryAllocator: ioctl_ping failed for device_type=5, ret=-1.
2021-06-26 05:10:29.573 24952-24952/c.bawp.securemessenger D/AndroidRuntime: Shutting down VM
2021-06-26 05:10:29.587 24952-24952/c.bawp.securemessenger E/AndroidRuntime: FATAL EXCEPTION: main
Process: c.bawp.securemessenger, PID: 24952
android.content.ActivityNotFoundException: Unable to find explicit activity class {c.bawp.securemessenger/c.bawp.securemessenger.ChatController}; have you declared this activity in your AndroidManifest.xml?
at android.app.Instrumentation.checkStartActivityResult(Instrumentation.java:2005)
at android.app.Instrumentation.execStartActivity(Instrumentation.java:1673)
at android.app.Activity.startActivityForResult(Activity.java:4586)
at androidx.activity.ComponentActivity.startActivityForResult(ComponentActivity.java:574)
at android.app.Activity.startActivityForResult(Activity.java:4544)
at androidx.activity.ComponentActivity.startActivityForResult(ComponentActivity.java:560)
at android.app.Activity.startActivity(Activity.java:4905)
at android.app.Activity.startActivity(Activity.java:4873)
at c.bawp.securemessenger.ChooseActivity$1.onClick(ChooseActivity.java:26)
at android.view.View.performClick(View.java:6597)
at com.google.android.material.button.MaterialButton.performClick(MaterialButton.java:1119)
at android.view.View.performClickInternal(View.java:6574)
at android.view.View.access$3100(View.java:778)
at android.view.View$PerformClick.run(View.java:25885)
at android.os.Handler.handleCallback(Handler.java:873)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:193)
at android.app.ActivityThread.main(ActivityThread.java:6669)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:493)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:858)
2021-06-26 05:10:29.657 24952-24952/c.bawp.securemessenger I/Process: Sending signal. PID: 24952 SIG: 9
So I don't know if this is the reason why it keeps shutting down any time I tap the button chat. The button chat is created in an activity.xml.
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="c.bawp.securemessenger">
<uses-permission android:name="android.permission.BLUETOOTH" />
<uses-permission android:name="android.permission.BLUETOOTH_ADMIN" />
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
<application
android:allowBackup="true"
android:icon="#drawable/icon"
android:label="#string/app_name"
android:supportsRtl="true"
android:usesCleartextTraffic="true"
android:theme="#style/Theme.SecureMessenger">
<activity android:name=".MainActivity" />
<activity android:name=".Main2Activity" />
<activity android:name=".ChooseActivity" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
<category android:name="android.intent.category.DEFAULT" />
</intent-filter>
</activity>
<activity android:name=".FileExchangeActivity"></activity>
</application>
</manifest>
package c.bawp.securemessenger;
import android.app.Activity;
import android.app.Dialog;
import android.bluetooth.BluetoothAdapter;
import android.bluetooth.BluetoothDevice;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.util.Log;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.ListView;
import android.widget.TextView;
import android.widget.Toast;
import androidx.appcompat.app.AppCompatActivity;
import com.google.android.material.textfield.TextInputLayout;
import java.util.ArrayList;
import java.util.Objects;
import java.util.Set;
public class MainActivity extends AppCompatActivity {
private TextView status;
private Button btnConnect;
private ListView listView;
private Dialog dialog;
private TextInputLayout inputLayout;
private MessageAdapter messageAdapter;
private ArrayAdapter<String> chatAdapter;
private ArrayList<String> chatMessages;
private BluetoothAdapter bluetoothAdapter;
public static final int MESSAGE_STATE_CHANGE = 1;
public static final int MESSAGE_READ = 2;
public static final int MESSAGE_WRITE = 3;
public static final int MESSAGE_DEVICE_OBJECT = 4;
public static final int MESSAGE_TOAST = 5;
public static final String DEVICE_OBJECT = "device_name";
private static final int REQUEST_ENABLE_BLUETOOTH = 1;
private ChatController chatController;
private BluetoothDevice connectingDevice;
private ArrayAdapter<String> discoveredDevicesAdapter;
private Encrypt encrypt;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
findViewsByIds();
//check device support bluetooth or not
bluetoothAdapter = BluetoothAdapter.getDefaultAdapter();
if (bluetoothAdapter == null) {
Toast.makeText(this, "Bluetooth is not available!", Toast.LENGTH_SHORT).show();
finish();
}
//show bluetooth devices dialog when click connect button
btnConnect.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
showPrinterPickDialog();
}
});
//set chat adapter
messageAdapter = new MessageAdapter(this);
listView.setAdapter(messageAdapter);
encrypt = new Encrypt();
}
private final Handler handler = new Handler(new Handler.Callback() {
#Override
public boolean handleMessage(Message msg) {
switch (msg.what) {
case MESSAGE_STATE_CHANGE:
switch (msg.arg1) {
case ChatController.STATE_CONNECTED:
setStatus("Connected to: " + connectingDevice.getName());
btnConnect.setVisibility(View.INVISIBLE);
break;
case ChatController.STATE_CONNECTING:
setStatus("Connecting...");
//btnConnect.setEnabled(false);
break;
case ChatController.STATE_LISTEN:
case ChatController.STATE_NONE:
setStatus("Not connected");
break;
}
break;
case MESSAGE_WRITE:
byte[] writeBuf = (byte[]) msg.obj;
String writeMessage = new String(writeBuf);
writeMessage = encrypt.decrypt(writeMessage);
//check out
MemberData data1 = new MemberData("Me","#C62828");
c.bawp.securemessenger.Message message1 = new c.bawp.securemessenger.Message(writeMessage, data1, true);
messageAdapter.add(message1);
break;
case MESSAGE_READ:
byte[] readBuf = (byte[]) msg.obj;
String readMessage = new String(readBuf, 0, msg.arg1);
readMessage = encrypt.decrypt(readMessage);
MemberData data2 = new MemberData(connectingDevice.getName(),"#C62828");
Log.d("Bug", "handleMessage: " + readMessage);
c.bawp.securemessenger.Message message2 = new c.bawp.securemessenger.Message(readMessage, data2, false);
messageAdapter.add(message2);
break;
case MESSAGE_DEVICE_OBJECT:
connectingDevice = msg.getData().getParcelable(DEVICE_OBJECT);
Toast.makeText(getApplicationContext(), "Connected to " + connectingDevice.getName(),
Toast.LENGTH_SHORT).show();
break;
case MESSAGE_TOAST:
Toast.makeText(getApplicationContext(), msg.getData().getString("toast"),
Toast.LENGTH_SHORT).show();
break;
}
return false;
}
});
private void showPrinterPickDialog() {
dialog = new Dialog(this);
dialog.setContentView(R.layout.layout_bluetooth);
dialog.setTitle("Bluetooth Devices");
if (bluetoothAdapter.isDiscovering()) {
bluetoothAdapter.cancelDiscovery();
}
bluetoothAdapter.startDiscovery();
//Initializing bluetooth adapters
ArrayAdapter<String> pairedDevicesAdapter = new ArrayAdapter<>(this, android.R.layout.simple_list_item_1);
discoveredDevicesAdapter = new ArrayAdapter<>(this, android.R.layout.simple_list_item_1);
//locate listviews and attach the adapters
ListView listView = dialog.findViewById(R.id.pairedDeviceList);
ListView listView2 = dialog.findViewById(R.id.discoveredDeviceList);
listView.setAdapter(pairedDevicesAdapter);
listView2.setAdapter(discoveredDevicesAdapter);
// Register for broadcasts when a device is discovered
IntentFilter filter = new IntentFilter();
filter.addAction(BluetoothDevice.ACTION_FOUND);
filter.addAction(BluetoothAdapter.ACTION_DISCOVERY_STARTED);
filter.addAction(BluetoothAdapter.ACTION_DISCOVERY_FINISHED);
registerReceiver(discoveryFinishReceiver, filter);
// Register for broadcasts when discovery has finished
bluetoothAdapter = BluetoothAdapter.getDefaultAdapter();
Set<BluetoothDevice> pairedDevices = bluetoothAdapter.getBondedDevices();
// If there are paired devices, add each one to the ArrayAdapter
if (pairedDevices.size() > 0) {
for (BluetoothDevice device : pairedDevices) {
pairedDevicesAdapter.add(device.getName() + "\n" + device.getAddress());
}
} else {
pairedDevicesAdapter.add(getString(R.string.none_paired));
}
//Handling listview item click event
listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
bluetoothAdapter.cancelDiscovery();
String info = ((TextView) view).getText().toString();
String address = info.substring(info.length() - 17);
connectToDevice(address);
dialog.dismiss();
}
});
listView2.setOnItemClickListener(new AdapterView.OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> adapterView, View view, int i, long l) {
bluetoothAdapter.cancelDiscovery();
String info = ((TextView) view).getText().toString();
String address = info.substring(info.length() - 17);
connectToDevice(address);
dialog.dismiss();
}
});
dialog.findViewById(R.id.cancelButton).setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
dialog.dismiss();
}
});
dialog.setCancelable(true);
dialog.show();
}
private void setStatus(String s) {
status.setText(s);
}
private void connectToDevice(String deviceAddress) {
bluetoothAdapter.cancelDiscovery();
BluetoothDevice device = bluetoothAdapter.getRemoteDevice(deviceAddress);
chatController.connect(device);
}
private void findViewsByIds() {
status = findViewById(R.id.status);
btnConnect = findViewById(R.id.btn_connect);
listView = findViewById(R.id.list);
inputLayout = findViewById(R.id.input_layout);
Button btnSend = findViewById(R.id.btn_send);
btnSend.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
if (Objects.requireNonNull(inputLayout.getEditText()).getText().toString().equals("")) {
Toast.makeText(MainActivity.this, "Please input some texts", Toast.LENGTH_SHORT).show();
} else {
//TODO: here
sendMessage(inputLayout.getEditText().getText().toString());
inputLayout.getEditText().setText("");
}
}
});
}
public void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (requestCode == REQUEST_ENABLE_BLUETOOTH) {
if (resultCode == Activity.RESULT_OK) {
chatController = new ChatController(this, handler);
} else {
Toast.makeText(this, "Bluetooth still disabled, turn off application!", Toast.LENGTH_SHORT).show();
finish();
}
}
}
private void sendMessage(String message) {
if (chatController.getState() != ChatController.STATE_CONNECTED) {
Toast.makeText(this, "Connection was lost!", Toast.LENGTH_SHORT).show();
return;
}
if (message.length() > 0) {
message = encrypt.encrypt(message);
byte[] send = message.getBytes();
chatController.write(send);
}
}
#Override
public void onStart() {
super.onStart();
if (!bluetoothAdapter.isEnabled()) {
Intent dIntent = new Intent(BluetoothAdapter.ACTION_REQUEST_DISCOVERABLE);
dIntent.putExtra(BluetoothAdapter.EXTRA_DISCOVERABLE_DURATION, 3000);
startActivity(dIntent);
} else {
chatController = new ChatController(this, handler);
}
}
#Override
public void onResume() {
super.onResume();
if (chatController != null) {
if (chatController.getState() == ChatController.STATE_NONE) {
chatController.start();
}
}
}
#Override
public void onDestroy() {
super.onDestroy();
if (chatController != null)
chatController.stop();
}
private final BroadcastReceiver discoveryFinishReceiver = new BroadcastReceiver() {
#Override
public void onReceive(Context context, Intent intent) {
String action = intent.getAction();
// When discovery finds a device
if (BluetoothDevice.ACTION_FOUND.equals(action)) {
// Get the BluetoothDevice object from the Intent
BluetoothDevice device = intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE);
// If it's already paired, skip it, because it's been listed already
if (device.getBondState() != BluetoothDevice.BOND_BONDED) {
discoveredDevicesAdapter.add(device.getName() + "\n" + device.getAddress());
}
// When discovery is finished, change the Activity title
} else if (BluetoothAdapter.ACTION_DISCOVERY_FINISHED.equals(action)) {
discoveredDevicesAdapter.clear();
//setProgressBarIndeterminateVisibility(false);
// setSupportProgressBarIndeterminateVisibility(true);
setTitle("Select a device to connect");
if (discoveredDevicesAdapter.getCount() == 0) {
discoveredDevicesAdapter.add("No devices found");
}
} else {
discoveredDevicesAdapter.add("Scanning Bluetooth Devices....");
}
}
};
}

Encrypt Bluetooth Chat

Having issues with the app, shuts down any time I click on the chat button. I just submitted my manifest, gradle , xml, and the mainactivity to check what really went wrong. Thanks
I have an error from the logcat
GoldfishAddressSpaceHostMemoryAllocator: ioctl_ping failed for device_type=5, ret=-1.
So I don't know if this is the reason why it keeps shutting down any time I tap the button chat. The button chat is created in an activity.xml.
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="c.bawp.securemessenger">
<uses-permission android:name="android.permission.BLUETOOTH" />
<uses-permission android:name="android.permission.BLUETOOTH_ADMIN" />
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
<application
android:allowBackup="true"
android:icon="#drawable/icon"
android:label="#string/app_name"
android:supportsRtl="true"
android:usesCleartextTraffic="true"
android:theme="#style/Theme.SecureMessenger">
<activity android:name=".MainActivity" />
<activity android:name=".Main2Activity" />
<activity android:name=".ChooseActivity" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
<category android:name="android.intent.category.DEFAULT" />
</intent-filter>
</activity>
<activity android:name=".FileExchangeActivity"></activity>
</application>
</manifest>
package c.bawp.securemessenger;
import android.app.Activity;
import android.app.Dialog;
import android.bluetooth.BluetoothAdapter;
import android.bluetooth.BluetoothDevice;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.util.Log;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.ListView;
import android.widget.TextView;
import android.widget.Toast;
import androidx.appcompat.app.AppCompatActivity;
import com.google.android.material.textfield.TextInputLayout;
import java.util.ArrayList;
import java.util.Objects;
import java.util.Set;
public class MainActivity extends AppCompatActivity {
private TextView status;
private Button btnConnect;
private ListView listView;
private Dialog dialog;
private TextInputLayout inputLayout;
private MessageAdapter messageAdapter;
private ArrayAdapter<String> chatAdapter;
private ArrayList<String> chatMessages;
private BluetoothAdapter bluetoothAdapter;
public static final int MESSAGE_STATE_CHANGE = 1;
public static final int MESSAGE_READ = 2;
public static final int MESSAGE_WRITE = 3;
public static final int MESSAGE_DEVICE_OBJECT = 4;
public static final int MESSAGE_TOAST = 5;
public static final String DEVICE_OBJECT = "device_name";
private static final int REQUEST_ENABLE_BLUETOOTH = 1;
private ChatController chatController;
private BluetoothDevice connectingDevice;
private ArrayAdapter<String> discoveredDevicesAdapter;
private Encrypt encrypt;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
findViewsByIds();
//check device support bluetooth or not
bluetoothAdapter = BluetoothAdapter.getDefaultAdapter();
if (bluetoothAdapter == null) {
Toast.makeText(this, "Bluetooth is not available!", Toast.LENGTH_SHORT).show();
finish();
}
//show bluetooth devices dialog when click connect button
btnConnect.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
showPrinterPickDialog();
}
});
//set chat adapter
messageAdapter = new MessageAdapter(this);
listView.setAdapter(messageAdapter);
encrypt = new Encrypt();
}
private final Handler handler = new Handler(new Handler.Callback() {
#Override
public boolean handleMessage(Message msg) {
switch (msg.what) {
case MESSAGE_STATE_CHANGE:
switch (msg.arg1) {
case ChatController.STATE_CONNECTED:
setStatus("Connected to: " + connectingDevice.getName());
btnConnect.setVisibility(View.INVISIBLE);
break;
case ChatController.STATE_CONNECTING:
setStatus("Connecting...");
//btnConnect.setEnabled(false);
break;
case ChatController.STATE_LISTEN:
case ChatController.STATE_NONE:
setStatus("Not connected");
break;
}
break;
case MESSAGE_WRITE:
byte[] writeBuf = (byte[]) msg.obj;
String writeMessage = new String(writeBuf);
writeMessage = encrypt.decrypt(writeMessage);
//check out
MemberData data1 = new MemberData("Me","#C62828");
c.bawp.securemessenger.Message message1 = new c.bawp.securemessenger.Message(writeMessage, data1, true);
messageAdapter.add(message1);
break;
case MESSAGE_READ:
byte[] readBuf = (byte[]) msg.obj;
String readMessage = new String(readBuf, 0, msg.arg1);
readMessage = encrypt.decrypt(readMessage);
MemberData data2 = new MemberData(connectingDevice.getName(),"#C62828");
Log.d("Bug", "handleMessage: " + readMessage);
c.bawp.securemessenger.Message message2 = new c.bawp.securemessenger.Message(readMessage, data2, false);
messageAdapter.add(message2);
break;
case MESSAGE_DEVICE_OBJECT:
connectingDevice = msg.getData().getParcelable(DEVICE_OBJECT);
Toast.makeText(getApplicationContext(), "Connected to " + connectingDevice.getName(),
Toast.LENGTH_SHORT).show();
break;
case MESSAGE_TOAST:
Toast.makeText(getApplicationContext(), msg.getData().getString("toast"),
Toast.LENGTH_SHORT).show();
break;
}
return false;
}
});
private void showPrinterPickDialog() {
dialog = new Dialog(this);
dialog.setContentView(R.layout.layout_bluetooth);
dialog.setTitle("Bluetooth Devices");
if (bluetoothAdapter.isDiscovering()) {
bluetoothAdapter.cancelDiscovery();
}
bluetoothAdapter.startDiscovery();
//Initializing bluetooth adapters
ArrayAdapter<String> pairedDevicesAdapter = new ArrayAdapter<>(this, android.R.layout.simple_list_item_1);
discoveredDevicesAdapter = new ArrayAdapter<>(this, android.R.layout.simple_list_item_1);
//locate listviews and attach the adapters
ListView listView = dialog.findViewById(R.id.pairedDeviceList);
ListView listView2 = dialog.findViewById(R.id.discoveredDeviceList);
listView.setAdapter(pairedDevicesAdapter);
listView2.setAdapter(discoveredDevicesAdapter);
// Register for broadcasts when a device is discovered
IntentFilter filter = new IntentFilter();
filter.addAction(BluetoothDevice.ACTION_FOUND);
filter.addAction(BluetoothAdapter.ACTION_DISCOVERY_STARTED);
filter.addAction(BluetoothAdapter.ACTION_DISCOVERY_FINISHED);
registerReceiver(discoveryFinishReceiver, filter);
// Register for broadcasts when discovery has finished
bluetoothAdapter = BluetoothAdapter.getDefaultAdapter();
Set<BluetoothDevice> pairedDevices = bluetoothAdapter.getBondedDevices();
// If there are paired devices, add each one to the ArrayAdapter
if (pairedDevices.size() > 0) {
for (BluetoothDevice device : pairedDevices) {
pairedDevicesAdapter.add(device.getName() + "\n" + device.getAddress());
}
} else {
pairedDevicesAdapter.add(getString(R.string.none_paired));
}
//Handling listview item click event
listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
bluetoothAdapter.cancelDiscovery();
String info = ((TextView) view).getText().toString();
String address = info.substring(info.length() - 17);
connectToDevice(address);
dialog.dismiss();
}
});
listView2.setOnItemClickListener(new AdapterView.OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> adapterView, View view, int i, long l) {
bluetoothAdapter.cancelDiscovery();
String info = ((TextView) view).getText().toString();
String address = info.substring(info.length() - 17);
connectToDevice(address);
dialog.dismiss();
}
});
dialog.findViewById(R.id.cancelButton).setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
dialog.dismiss();
}
});
dialog.setCancelable(true);
dialog.show();
}
private void setStatus(String s) {
status.setText(s);
}
private void connectToDevice(String deviceAddress) {
bluetoothAdapter.cancelDiscovery();
BluetoothDevice device = bluetoothAdapter.getRemoteDevice(deviceAddress);
chatController.connect(device);
}
private void findViewsByIds() {
status = findViewById(R.id.status);
btnConnect = findViewById(R.id.btn_connect);
listView = findViewById(R.id.list);
inputLayout = findViewById(R.id.input_layout);
Button btnSend = findViewById(R.id.btn_send);
btnSend.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
if (Objects.requireNonNull(inputLayout.getEditText()).getText().toString().equals("")) {
Toast.makeText(MainActivity.this, "Please input some texts", Toast.LENGTH_SHORT).show();
} else {
//TODO: here
sendMessage(inputLayout.getEditText().getText().toString());
inputLayout.getEditText().setText("");
}
}
});
}
public void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (requestCode == REQUEST_ENABLE_BLUETOOTH) {
if (resultCode == Activity.RESULT_OK) {
chatController = new ChatController(this, handler);
} else {
Toast.makeText(this, "Bluetooth still disabled, turn off application!", Toast.LENGTH_SHORT).show();
finish();
}
}
}
private void sendMessage(String message) {
if (chatController.getState() != ChatController.STATE_CONNECTED) {
Toast.makeText(this, "Connection was lost!", Toast.LENGTH_SHORT).show();
return;
}
if (message.length() > 0) {
message = encrypt.encrypt(message);
byte[] send = message.getBytes();
chatController.write(send);
}
}
#Override
public void onStart() {
super.onStart();
if (!bluetoothAdapter.isEnabled()) {
Intent dIntent = new Intent(BluetoothAdapter.ACTION_REQUEST_DISCOVERABLE);
dIntent.putExtra(BluetoothAdapter.EXTRA_DISCOVERABLE_DURATION, 3000);
startActivity(dIntent);
} else {
chatController = new ChatController(this, handler);
}
}
#Override
public void onResume() {
super.onResume();
if (chatController != null) {
if (chatController.getState() == ChatController.STATE_NONE) {
chatController.start();
}
}
}
#Override
public void onDestroy() {
super.onDestroy();
if (chatController != null)
chatController.stop();
}
private final BroadcastReceiver discoveryFinishReceiver = new BroadcastReceiver() {
#Override
public void onReceive(Context context, Intent intent) {
String action = intent.getAction();
// When discovery finds a device
if (BluetoothDevice.ACTION_FOUND.equals(action)) {
// Get the BluetoothDevice object from the Intent
BluetoothDevice device = intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE);
// If it's already paired, skip it, because it's been listed already
if (device.getBondState() != BluetoothDevice.BOND_BONDED) {
discoveredDevicesAdapter.add(device.getName() + "\n" + device.getAddress());
}
// When discovery is finished, change the Activity title
} else if (BluetoothAdapter.ACTION_DISCOVERY_FINISHED.equals(action)) {
discoveredDevicesAdapter.clear();
//setProgressBarIndeterminateVisibility(false);
// setSupportProgressBarIndeterminateVisibility(true);
setTitle("Select a device to connect");
if (discoveredDevicesAdapter.getCount() == 0) {
discoveredDevicesAdapter.add("No devices found");
}
} else {
discoveredDevicesAdapter.add("Scanning Bluetooth Devices....");
}
}
};
}

AlertDialog inside checkbox in Android Studio

I am new to Android Studio. I want to create an AlertDialog, which contains a simple TextView, that appears at every lap of time (e.g. 5 min) inside the checkbox, so if the checkbox is clicked, the AlertDialog appears every 5 min. If it's not clicked, then nothing appears. Help me please.
After a bit of experimentation, I was able to create something similar to what I think you want. This is the small project I created, but you can take just the parts of the code that are needed for your project.
import android.app.AlertDialog;
import android.content.DialogInterface;
import android.os.Handler;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.widget.CheckBox;
import android.widget.CompoundButton;
import android.widget.LinearLayout;
import android.widget.TextView;
public class MainActivity extends AppCompatActivity
{
TextView input;
long startTime = 0;
#Override
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
final LinearLayout ll = new LinearLayout(this);
setContentView(ll);
CheckBox cb = new CheckBox(getApplicationContext());
cb.setText("Checkbox");
ll.addView(cb);
cb.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener()
{
#Override
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked)
{
if (isChecked)
{
startTime = System.currentTimeMillis();
timerHandler.postDelayed(timerRunnable, 0);
}
else
{
timerHandler.removeCallbacks(timerRunnable);
}
}
});
}
public void showDialog()
{
AlertDialog.Builder alert = new AlertDialog.Builder(this);
alert.setTitle("Title");
alert.setMessage("Message");
input = new TextView (this);
alert.setView(input);
input.setText("Text");
alert.setPositiveButton("Ok", new DialogInterface.OnClickListener()
{
public void onClick(DialogInterface dialog, int whichButton)
{
// do stuff when Ok is clicked
}
});
alert.setNegativeButton("Cancel", new DialogInterface.OnClickListener()
{
public void onClick(DialogInterface dialog, int whichButton)
{
// do stuff when Cancel is clicked
}
});
alert.show();
}
Handler timerHandler = new Handler();
Runnable timerRunnable = new Runnable()
{
#Override
public void run()
{
showDialog();
// Edit the second parameter to whatever time you want in milliseconds
timerHandler.postDelayed(this, 300_000);
}
};
#Override
public void onPause()
{
super.onPause();
timerHandler.removeCallbacks(timerRunnable);
}
}
Hopefully, this helps.

Image capture with camera & upload to Firebase (Uri in onActivityResult() is null)

So I've got a problem, previously mentioned in the question I've asked: Uploading image (ACTION_IMAGE_CAPTURE) to Firebase storage
I've searched for the issue a bit more, and applied the Android Studio documentation: https://developer.android.com/training/camera/photobasics.html#TaskPhotoView
So, before you read the code, I basically want to say what is needed: I just want to capture a photo with camera and upload it directly to Firebase storage. To do that I need the Uri to contain the picture I just took (Uri.getLastPathSegment()), however I still couldn't succeed doing this.
So now, this is what my code look like (only related parts):
AndroidManifest.xml:
<provider
android:name="android.support.v4.content.FileProvider"
android:authorities="com.example.android.fileprovider"
android:exported="false"
android:grantUriPermissions="true">
<meta-data
android:name="android.support.FILE_PROVIDER_PATHS"
android:resource="#xml/file_paths"></meta-data>
</provider>
I have the res/xml/file_paths.xml:
<?xml version="1.0" encoding="utf-8"?>
<paths xmlns:android="http://schemas.android.com/apk/res/android">
<external-path name="my_images" path="Android/data/com.serjardovic.firebasesandbox/files/Pictures" />
</paths>
and finaly the MainActivity.java:
public class MainActivity extends AppCompatActivity {
private Button b_gallery, b_capture;
private ImageView iv_image;
private StorageReference storage;
private static final int GALLERY_INTENT = 2;
private static final int CAMERA_REQUEST_CODE = 1;
private ProgressDialog progressDialog;
String mCurrentPhotoPath;
private File createImageFile() throws IOException {
// Create an image file name
String timeStamp = new SimpleDateFormat("yyyyMMdd_HHmmss").format(new Date());
String imageFileName = "JPEG_" + timeStamp + "_";
File storageDir = getExternalFilesDir(Environment.DIRECTORY_PICTURES);
File image = File.createTempFile(
imageFileName, /* prefix */
".jpg", /* suffix */
storageDir /* directory */
);
// Save a file: path for use with ACTION_VIEW intents
mCurrentPhotoPath = image.getAbsolutePath();
return image;
}
private void dispatchTakePictureIntent() {
Intent takePictureIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
// Ensure that there's a camera activity to handle the intent
if (takePictureIntent.resolveActivity(getPackageManager()) != null) {
// Create the File where the photo should go
File photoFile = null;
try {
photoFile = createImageFile();
} catch (IOException ex) {
// Error occurred while creating the File...
}
// Continue only if the File was successfully created
if (photoFile != null) {
Uri photoURI = FileProvider.getUriForFile(this,
"com.example.android.fileprovider",
photoFile);
takePictureIntent.putExtra(MediaStore.EXTRA_OUTPUT, photoURI);
startActivityForResult(takePictureIntent, CAMERA_REQUEST_CODE);
}
}
}
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
storage = FirebaseStorage.getInstance().getReference();
b_gallery = (Button) findViewById(R.id.b_gallery);
b_capture = (Button) findViewById(R.id.b_capture);
iv_image = (ImageView) findViewById(R.id.iv_image);
progressDialog = new ProgressDialog(this);
b_capture.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
//Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
dispatchTakePictureIntent();
}
});
}
#Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if(requestCode == CAMERA_REQUEST_CODE && resultCode == RESULT_OK){
progressDialog.setMessage("Uploading...");
progressDialog.show();
Uri uri = data.getData();
StorageReference filepath = storage.child("Photos").child(uri.getLastPathSegment());
filepath.putFile(uri).addOnSuccessListener(new OnSuccessListener<UploadTask.TaskSnapshot>() {
#Override
public void onSuccess(UploadTask.TaskSnapshot taskSnapshot) {
Toast.makeText(MainActivity.this, "Upload Successful!", Toast.LENGTH_SHORT).show();
progressDialog.dismiss();
}
}).addOnFailureListener(new OnFailureListener() {
#Override
public void onFailure(#NonNull Exception e) {
Toast.makeText(MainActivity.this, "Upload Failed!", Toast.LENGTH_SHORT).show();
}
});
}
}
}
Need a solution! Still, the app crashes after I take the picture and press the confirm button and I get the following crash report:
java.lang.RuntimeException: Failure delivering result ResultInfo{who=null, request=1, result=-1, data=null} to activity {com.serjardovic.firebasesandbox/com.serjardovic.firebasesandbox.MainActivity}: java.lang.NullPointerException: Attempt to invoke virtual method 'android.net.Uri android.content.Intent.getData()' on a null object reference
Try changing mCurrentPhotoPath = image.getAbsolutePath(); to mCurrentPhotoPath = "file:" + image.getAbsolutePath();.
I didnt spot any other differences from my code, which has worked.
So the answer is simple, thanks to #wilkas help in the comments. I just forgot to add the photoURI into filepath.putFile(photoURI), it was just filepath.putFile(uri), so the addition of code simply did nothing until I notices this. Hope this Q&A will help someone else with a similar problem!

Getting phone hearing volume with Java ME

Is it possible to get the value of phobe in-call volume from java me midlet? Changing of the volume is not necessary.
Thanks.
AFAIK,
It is not possible to access the phone volume. But you can set your application volume or get the application.
Sample code for Controlling the volume of your application :
import javax.microedition.midlet.*;
import javax.microedition.lcdui.*;
import javax.microedition.lcdui.Ticker;
import javax.microedition.media.*;
public class VolumeControlDemo extends MIDlet implements CommandListener {
private Display display;
private Command exit,incr,decr;
Form frm;
VolumeControl vc;
int vol;
Player player;
public VolumeControlDemo() {
display = Display.getDisplay(this);
}
public void startApp() {
frm=new Form("VolumeControlDemo Demo");
exit= new Command("Exit",Command.EXIT,1);
decr= new Command("Decrease",Command.EXIT,1);
incr= new Command("Increase",Command.EXIT,1);
frm.addCommand(exit);
frm.addCommand(decr);
frm.addCommand(incr);
frm.setCommandListener(this);
display.setCurrent(frm);
try {
// Creating player object
player = Manager.createPlayer("/demo.wav");
// Setting loop count
player.setLoopCount(-1);
// Start sound
player.start();
Control cs[];
// Getting Controls object
cs = player.getControls();
for (int i = 0; i < cs.length; i++) {
if (cs[i] instanceof VolumeControl)
// Getting volume control
vc=(VolumeControl)cs[i];
}
} catch (Exception e) {}
}
public void pauseApp() {
}
public void destroyApp(boolean un) {
}
public void commandAction(Command cmd,Displayable d) {
try {
if(decr) {
if(vol>0) vol--;
vc.setLevel(vol);
} else if() {
if(vol<99) vol--;
vc.setLevel(vol);
}
frm.appent("vol="+vc.getLevel());
}catch(Exception e){}
}
}

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