Android 橫屏啟動activity,點擊螢幕的單擊、雙擊和長按事件

橫屏啟動activity　　方法1：在androidmanyfest.xml的activity中加入屬性 android:screenOrientation="landscape"　　方法2：首先添加    import android.content.pm.ActivityInfo;     import android.view.Display;   在oncreate中加入如下代碼 if(getRequestedOrientation()!=ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE){ setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);}　　螢幕的單擊和雙擊事件　　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　　}