减少Android中的应用程序CPU使用率

Question

My app shows a splash screen for 4 seconds and then opens another activity with a web view. I am using a thread to splash the screen and finish() the first activity as soon as web view activity is started. I have also used animations like fade in and fade out. It's CPU usage is fluctuating between 8% to 23%.What could be the reason. I want to reduce the CPU usage. My first activity that shows splash screen and starts web view activity-

           public class MainActivity extends Activity {
Thread splashThread;
@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    overridePendingTransition(R.animation.fadein,R.animation.fadeout); 

    getWindow().requestFeature(Window.FEATURE_NO_TITLE);
    getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
            WindowManager.LayoutParams.FLAG_FULLSCREEN);

    setContentView(R.layout.activity_main);
}

@Override
protected void onStart() {
    // TODO Auto-generated method stub
     //-----------------------------------------

        splashThread=new Thread(){
        public void run()
        {
            try
            {   
                sleep(1000);                    
            }
            catch(Exception e)
            {
                e.printStackTrace();
            }
            finally
            {
                Intent intent = new Intent(getApplicationContext(),OpenWeb.class);
                        startActivity(intent);
            }
        }
    };
    splashThread.start();
     //-----------------------------------------

    super.onStart();
    overridePendingTransition(R.animation.fadein, R.animation.fadeout);
}
@Override
protected void onStop() {
    // TODO Auto-generated method stub
    finish();
    super.onRestart();
} 
}

Answer 1

Could be that you used alot of imports something like. I heard that uses alot of cpu?

import android.graphics.*

Are you using a AVD?