Question

I would like to know how can I create method to add linearlayout to other layout. I want to create method which when I use this method in activity, this method add linear layout in top of my activity layout. How can I do that?

Edit:
I do something like that:

public class SecondActivity extends Activity {

    LinearLayout layout;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.second_activity);

        layout = (LinearLayout) findViewById(R.id.lay);
        Button next = (Button) findViewById(R.id.nextActivity);
        layout.addView(addNewLinearLayout(getApplicationContext()));

        next.setOnClickListener(new OnClickListener() {

            @Override
            public void onClick(View v) {
                Intent intent = new Intent(SecondActivity.this, ThirdActivity.class);
                startActivity(intent);
            }
        });
    }
    private View addNewLinearLayout(Context context) {
        LinearLayout linearLayout = new LinearLayout(context);
        LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.WRAP_CONTENT);
        linearLayout.setLayoutParams(params);
        linearLayout.setBackgroundColor(getResources().getColor(R.color.black));
        // Do something else here on your linear layout or to customize your linear layout
        return linearLayout;
    }

}

and this is xml:

    <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
        android:id="@+id/lay"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:orientation="vertical" >

        <Button
            android:id="@+id/nextActivity"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Button" 
        android:layout_marginTop="100dp"
        />

</LinearLayout>

but my layout is not changing his color. Why?

Answer 1

Try something like this :

private View _addNewLinearLayout(context) {
    LinearLayout linearLayout = new LinearLayout(context);
    LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.WRAP_CONTENT);
    linearLayout.setLayoutParams(params);
    // Do something else here on your linear layout or to customize your linear layout

    return linearLayout;
}

In the main you could call this like :

getView().addView(_addNewLinearLayout(context));