今天项目里遇到一个奇怪的问题，获取到的屏幕高度和实际的不一样，就觉得奇怪，然后仔细的看了下，因为我的测试机是小米10，全面屏，所以获取的高度有误差。
获取屏幕高度的几种方法
1、系统方法
int screenHeight = Resources.getSystem().getDisplayMetrics().heightPixels；//屏幕高度
int screenWidth = Resources.getSystem().getDisplayMetrics().widthPixels；//屏幕宽度
2、通过WINDOW_SERVICE 获取WindowManager窗口管理类
/**
* 屏幕高度
* @return the height of screen, in pixel
*/
public static int getScreenHeight(Context context) {
WindowManager wm = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE);
Point point = new Point();
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR1) {
//noinspection ConstantConditions
wm.getDefaultDisplay().getRealSize(point);
} else {
//noinspection ConstantConditions
wm.getDefaultDisplay().getSize(point);
}
return point.y;
}
/**
* 屏幕宽度
* @return the width of screen, in pixel
*/
public static int getScreenWidth(Context context) {
WindowManager wm = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE);
Point point = new Point();
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR1) {
//noinspection ConstantConditions
wm.getDefaultDisplay().getRealSize(point);
} else {
//noinspection ConstantConditions
wm.getDefaultDisplay().getSize(point);
}
return point.x;
}
以上2种方式获取到的屏幕高度，都是缺省的，缺省的部分就是没包含系统状态栏
3、根据屏幕判断，获取完整的屏幕宽高
/***
* 获取屏幕的高度，全面屏和非全面屏
* @param context
* @return
*/
public static int getFullActivityHeight(@Nullable Context context) {
if (!isAllScreenDevice()) {
return getScreenHeight(context);
}
return getScreenRealHeight(context);
}
private static final int PORTRAIT = 0;
private static final int LANDSCAPE = 1;
private volatile static boolean mHasCheckAllScreen;
private volatile static boolean mIsAllScreenDevice;
@NonNull
private volatile static Point[] mRealSizes = new Point[2];
public static int getScreenRealHeight(@Nullable Context context) {
if (Build.VERSION.SDK_INT < Build.VERSION_CODES.JELLY_BEAN_MR1) {
return getScreenHeight(context);
}
int orientation = context != null
? context.getResources().getConfiguration().orientation
: AppManager.getAppManager().getNowContext().getResources().getConfiguration().orientation;
orientation = orientation == Configuration.ORIENTATION_PORTRAIT ? PORTRAIT : LANDSCAPE;
if (mRealSizes[orientation] == null) {
WindowManager windowManager = context != null
? (WindowManager) context.getSystemService(Context.WINDOW_SERVICE)
: (WindowManager) context.getSystemService(Context.WINDOW_SERVICE);
if (windowManager == null) {
return getScreenHeight(context);
}
Display display = windowManager.getDefaultDisplay();
Point point = new Point();
display.getRealSize(point);
mRealSizes[orientation] = point;
}
return mRealSizes[orientation].y;
}
public static int getScreenHeight(@Nullable Context context) {
if (context != null) {
return context.getResources().getDisplayMetrics().heightPixels;
}
return 0;
}
/***
* 获取当前手机是否是全面屏
* @return
*/
public static boolean isAllScreenDevice() {
if (mHasCheckAllScreen) {
return mIsAllScreenDevice;
}
mHasCheckAllScreen = true;
mIsAllScreenDevice = false;
// 低于 API 21的，都不会是全面屏。。。
if (Build.VERSION.SDK_INT < Build.VERSION_CODES.LOLLIPOP) {
return false;
}
WindowManager windowManager = (WindowManager) AppManager.getAppManager().getNowContext().getSystemService(Context.WINDOW_SERVICE);
if (windowManager != null) {
Display display = windowManager.getDefaultDisplay();
Point point = new Point();
display.getRealSize(point);
float width, height;
if (point.x < point.y) {
width = point.x;
height = point.y;
} else {
width = point.y;
height = point.x;
}
if (height / width >= 1.97f) {
mIsAllScreenDevice = true;
}
}
return mIsAllScreenDevice;
}
总结
以上就是关于获取屏幕高度的方法，具体使用根据具体情况，希望能帮到大家
