Android获取屏幕宽高的方法
1. 实现代码
private int mWidth; private int mHeight; @TargetApi(Build.VERSION_CODES.JELLY_BEAN_MR1) public void getDisplayMetrics() { WindowManager wm = (WindowManager) mContext.getSystemService(Context.WINDOW_SERVICE); Display display = wm.getDefaultDisplay(); int API_LEVEL = android.os.Build.VERSION.SDK_INT; // 方法1 DisplayMetrics displayMetrics = new DisplayMetrics(); if (API_LEVEL >= 17) { display.getRealMetrics(displayMetrics); } else { display.getMetrics(displayMetrics); } mWidth = displayMetrics.widthPixels; mHeight = displayMetrics.heightPixels; // 方法2 Point outSize = new Point(); if (API_LEVEL >= 17) { display.getRealSize(outSize); } else { display.getSize(outSize); } mWidth = outSize.x; mHeight = outSize.y; // 方法3 mWidth = mContext.getResources().getDisplayMetrics().widthPixels; mHeight = mContext.getResources().getDisplayMetrics().heightPixels; }
2. 说明
Display
Provides information about the size and density of a logical display.
The display area is described in two different ways.
- The application display area specifies the part of the display that may contain an application window, excluding the system decorations. The application display area may be smaller than the real display area because the system subtracts the space needed for decor elements such as the status bar. Use the following methods to query the application display area:
getSize(Point)
,getRectSize(Rect)
andgetMetrics(DisplayMetrics)
. - The real display area specifies the part of the display that contains content including the system decorations. Even so, the real display area may be smaller than the physical size of the display if the window manager is emulating a smaller display using (adb shell am display-size). Use the following methods to query the real display area:
getRealSize(Point)
,getRealMetrics(DisplayMetrics)
.
3. Note
public void getRealMetrics (DisplayMetrics outMetrics)
Gets display metrics based on the real size of this display.
The size is adjusted based on the current rotation of the display.
The real size may be smaller than the physical size of the screen when the window manager is emulating a smaller display (using adb shell am display-size).
public void getRealSize (Point outSize)
Gets the real size of the display without subtracting any window decor or applying any compatibility scale factors.
The size is adjusted based on the current rotation of the display.
The real size may be smaller than the physical size of the screen when the window manager is emulating a smaller display (using adb shell am display-size).
郑重声明:本站内容如果来自互联网及其他传播媒体,其版权均属原媒体及文章作者所有。转载目的在于传递更多信息及用于网络分享,并不代表本站赞同其观点和对其真实性负责,也不构成任何其他建议。