横屏启动activity 方法1:在androidmanyfest.xml的activity中加入属性 android:screenOrientation="landscape" 方法2:首先添加 import android.content.pm.ActivityInfo; import android.view.Display; 在oncreate中加入如下代码 if(getRequestedOrientation()!=ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE){ setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);} 屏幕的单击和双击事件 mGestureDetector = new GestureDetector(new SimpleOnGestureListener(){ @Override public boolean onDoubleTap(MotionEvent e) { // TODO Auto-generated method stub return true; } @Override public boolean onSingleTapConfirmed(MotionEvent e) { // TODO Auto-generated method stub return true; } @Override public void onLongPress(MotionEvent e) { // TODO Auto-generated method stub }