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Write Code In MainActivity.java          ActionBar actionBar = getActionBar();         actionBar.show();         // Locate ImageView in activity_main.xml         ImageView myimage = (ImageView) findViewById(R.id.image);         // Attach image into ImageView         myimage.setImageResource(R.drawable.wallpaper);

1] Write Code In MainActivity.java File: package com.example.screensize; import android.app.Activity; import android.os.Bundle; import android.util.DisplayMetrics; import android.widget.TextView; public class MainActivity extends Activity {     @Override     protected void onCreate(Bundle savedInstanceState) {         super.onCreate(savedInstanceState);         setContentView(R.layout.activity_main);         DisplayMetrics metrics=new DisplayMetrics();         getWindowManager().getDefaultDisplay().getMetrics(metrics);         float dp_w=(metrics.widthPixels*160)/metrics.xdpi;         float dp_h=(metrics.heightPixels*160)/metrics.ydpi;         TextView tv=(TextView)findViewById(R.id.tv_screen); ...

1] Write Code In MainActivity.java File:     public class MainActivity extends Activity {     Spinner sp;     String[] Celebrety = { "Choose Any Celebrety",                             "Alia Bhatt",                             "Dipika Padukon",                             "Priyanka Chopra",                             "Salman Khan"                          };     Integer[]...