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();}

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