Android银幕属性应用_Android

Android屏幕属性应用

一、获取屏幕大小?

DisplayMetrics dm = new DisplayMetrics(); getWindowManager().getDefaultDisplay().getMetrics(dm); textView1.setText("分辨率：宽:" + dm.widthPixels + "高:" + dm.heightPixels);

二、隐藏状态栏和标题栏

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

三、切换屏幕方向

预先在manifest.xml定义屏幕方向

<activity      android:name=".EX05_22"      android:label="@string/app_name"      android:screenOrientation="portrait"></activity>

private Button button1;	private int width;	private int height;		public void onCreate(Bundle savedInstanceState) {		super.onCreate(savedInstanceState);		setContentView(R.layout.screen_change);				button1 = (Button)findViewById(R.id.button1);				button1.setOnClickListener(new OnClickListener(){			public void onClick(View v) {				DisplayMetrics dm = new DisplayMetrics(); 				getWindowManager().getDefaultDisplay().getMetrics(dm); 				width = dm.widthPixels;				height = dm.heightPixels;				if(width < height){					setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);					toast("已切换横屏");									}				else{					setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);					toast("已切换竖屏");				}			}					});	}		public void toast(String str) {		Toast.makeText(ScreenChange.this, str, Toast.LENGTH_LONG).show();	}