How to create activity with text view, a button and a toast? - android-studio

Question

I am basic. in android studio, I want to start a basic project.
I want to type "any word" in a plain text view.
Only whenever I click on a button ,Just we can see that word as a TOAST.
this case I need : a plan text view, a button , and a toast.
How should i do this?
Thanks for the replies.

Answer 1

In your xml file you need to set an id for both textviews and button
In your activity:
//get the button
button = (Button) findViewById(R.id.but);
txt1= (text1) findViewById(R.id.text1);
txt2 = (text2) findViewById(R.id.text2);
button.setOnClickListener(new OnClickListener() {
public void onClick(View v)
{
txt2.setText(txt1);
}

Answer 2

Your XML code should look like so. Note the id's of the EditText and the TextView which are crucial for extracting your strings and setting them respectively.
Also note the 'onClick' function on your button which is necessary to call upon the method in your MainActivity (Java Class) with the same name.
<LinearLayout
android:layout_height="match_parent"
android:layout_width="match_parent"
android:orientation="vertical"
xmlns:android="http://schemas.android.com/apk/res/android">
<EditText
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="#+id/enterText"/>
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:onClick="changeText"
android:text="Show Now"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="#+id/newText"/>
</LinearLayout>
Now for your MainActivity (Java) Class method:
public void changeText(View view){
EditText editText = findViewById(R.id.enterText);
String res = editText.getText().toString();
TextView textView = findViewById(R.id.newText);
textView.setText(res);
}
Again take note of the declaration of the EditText object using your 'id', "enterText" and "newText" respectively.
Hope this helps.