Android屏幕大小,翻转，控件居中相关技巧
读取屏的方向:public void onCreate() {if (this.getResources().getConfiguration().orientation == Configuration.ORIENTATION_LANDSCAPE) {Log.i("info", "landscape");} else if (this.getResources().getConfiguration().orientation == Configuration.ORIENTATION_PORTRAIT) {Log.i("info", "portrait");}}
如果在androidmanifest.xml中加入配置
android:configChanges="orientation|keyboardHidden|navigation
当屏幕翻转时，Activity就不会重复的调用onCreate()、onPause()和onResume().
而是调用onConfigurationChanged(Configuration newConfig)
获取屏的大小：
int screenWidth, screenHeight;WindowManager windowManager = getWindowManager();Display display = windowManager.getDefaultDisplay();screenWidth = display.getWidth();screenHeight = display.getHeight();int screenWidth, screenHeight;WindowManager windowManager = getWindowManager();Display display = windowManager.getDefaultDisplay();screenWidth = display.getWidth();screenHeight = display.getHeight();// 不显示标题requestWindowFeature(Window.FEATURE_NO_TITLE);// 设置窗口全屏显示getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,WindowManager.LayoutParams.FLAG_FULLSCREEN);// 取得屏幕信息DisplayMetrics dm = new DisplayMetrics();dm = this.getResources().getDisplayMetrics();// 获得屏幕宽度int screenWidth = dm.widthPixels;// 获得屏幕高度int screenHeight = dm.heightPixels;
控件居中：
android:layout_centerInParent="true"
文本对齐方式：
android:gravity="right"
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