android: 获取屏幕高度和虚拟导航栏高度的几种方法
package com.yongdaimi.android.androidapitest; import android.app.Activity; import android.content.Context; import android.content.res.Resources; import android.graphics.Point; import android.graphics.Rect; import android.support.v7.app.AppCompatActivity; import android.os.Bundle; import android.util.DisplayMetrics; import android.util.Log; import android.view.Display; import android.view.Window; import android.view.WindowManager; public class MainActivity extends AppCompatActivity { @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); testCode(); } @Override public void onWindowFocusChanged(boolean hasFocus) { super.onWindowFocusChanged(hasFocus); Log.i("xp.chen", "getContentViewHeight(): "+getContentViewHeight(MainActivity.this)); Log.i("xp.chen", "getStatusBarHeight2(): "+getStatusBarHeight2(this)); } private void testCode() { Log.i("xp.chen", "getResources().getDisplayMetrics():: widthPixels: "+getScreenWidth(this)); Log.i("xp.chen", "getResources().getDisplayMetrics():: heightPixels: "+getScreenHeight(this)); Log.i("xp.chen", "WindowManager:: widthPixels: "+getScreenWidth2(this)); Log.i("xp.chen", "WindowManager:: heightPixels: "+getScreenHeight2(this)); Log.i("xp.chen", "WindowManager getRealSize() :: widthPixels: "+getScreenWidth3(this)); Log.i("xp.chen", "WindowManager getRealSize() :: heightPixels: "+getScreenHeight3(this)); Log.i("xp.chen", "getResources() navigation_bar_height: "+getNavigationBarHeight(this)); Log.i("xp.chen", "getResources() getStatusBarHeight: "+getStatusBarHeight(this)); } public static int getScreenWidth(Context context) { return context.getResources().getDisplayMetrics().widthPixels; } /** * 不包含虚拟导航栏高度 * @param context * @return */ public static int getScreenHeight(Context context) { return context.getResources().getDisplayMetrics().heightPixels; } public static int getScreenWidth2(Context context) { WindowManager wm = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE); DisplayMetrics dm = new DisplayMetrics(); wm.getDefaultDisplay().getMetrics(dm); return dm.widthPixels; } public static int getScreenHeight2(Context context) { WindowManager wm = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE); DisplayMetrics dm = new DisplayMetrics(); wm.getDefaultDisplay().getMetrics(dm); return dm.heightPixels; } /** * 包含虚拟导航栏高度 * @param context * @return */ public static int getScreenWidth3(Context context) { WindowManager windowManager = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE); Display defaultDisplay = windowManager.getDefaultDisplay(); Point outPoint = new Point(); defaultDisplay.getRealSize(outPoint); return outPoint.x; } public static int getScreenHeight3(Context context) { WindowManager windowManager = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE); Display defaultDisplay = windowManager.getDefaultDisplay(); Point outPoint = new Point(); defaultDisplay.getRealSize(outPoint); return outPoint.y; } public static int getNavigationBarHeight(Context context) { int navigationBarHeight = -1; Resources resources = context.getResources(); int resourceId = resources.getIdentifier("navigation_bar_height","dimen", "android"); if (resourceId > 0) { navigationBarHeight = resources.getDimensionPixelSize(resourceId); } return navigationBarHeight; } public int getStatusBarHeight(Context context) { int result = 0; int resourceId = context.getResources().getIdentifier("status_bar_height", "dimen", "android"); if (resourceId > 0) { result = getResources().getDimensionPixelSize(resourceId); } return result; } /** * 注意:这个方法的值必须等到页面创建完成后才能获取到。推荐写在onWindowFocusChanged()方法中 * @param activity * @return */ public int getStatusBarHeight2(Activity activity) { Rect rectangle = new Rect(); getWindow().getDecorView().getWindowVisibleDisplayFrame(rectangle); return rectangle.top; } /** * 注意:这个方法的值必须等到页面创建完成后才能获取到。推荐写在onWindowFocusChanged()方法中 * @param activity * @return */ public static int getContentViewHeight(Activity activity) { Rect rectangle= new Rect(); activity.getWindow().findViewById(Window.ID_ANDROID_CONTENT).getDrawingRect(rectangle); return rectangle.height(); } /** * 可以利用getScreenHeight() 与 getScreenHeight3() 返回值的差异来判断是否存在虚拟导航栏 * @param context * @return */ public static boolean hasNavigationBar(Context context) { return getScreenHeight(context) != getScreenHeight3(context); } }
测试结果:
【三星S6 无虚拟导航栏】
2019-05-07 15:58:08.157 11483-11483/com.yongdaimi.android.androidapitest I/xp.chen: getResources().getDisplayMetrics():: widthPixels: 1440
2019-05-07 15:58:08.157 11483-11483/com.yongdaimi.android.androidapitest I/xp.chen: getResources().getDisplayMetrics():: heightPixels: 2560
2019-05-07 15:58:08.157 11483-11483/com.yongdaimi.android.androidapitest I/xp.chen: WindowManager:: widthPixels: 1440
2019-05-07 15:58:08.158 11483-11483/com.yongdaimi.android.androidapitest I/xp.chen: WindowManager:: heightPixels: 2560
2019-05-07 15:58:08.158 11483-11483/com.yongdaimi.android.androidapitest I/xp.chen: WindowManager getRealSize() :: widthPixels: 1440
2019-05-07 15:58:08.158 11483-11483/com.yongdaimi.android.androidapitest I/xp.chen: WindowManager getRealSize() :: heightPixels: 2560
2019-05-07 15:58:08.159 11483-11483/com.yongdaimi.android.androidapitest I/xp.chen: getResources() navigation_bar_height: 192
2019-05-07 15:58:08.159 11483-11483/com.yongdaimi.android.androidapitest I/xp.chen: getResources() getStatusBarHeight: 96
2019-05-07 15:58:08.224 11483-11483/com.yongdaimi.android.androidapitest I/xp.chen: getContentViewHeight(): 2240
2019-05-07 15:58:08.225 11483-11483/com.yongdaimi.android.androidapitest I/xp.chen: getStatusBarHeight2(): 96
【Google Nexus6 带虚拟导航栏】
2019-05-07 15:59:02.894 30818-30818/com.yongdaimi.android.androidapitest I/xp.chen: getResources().getDisplayMetrics():: widthPixels: 1440
2019-05-07 15:59:02.894 30818-30818/com.yongdaimi.android.androidapitest I/xp.chen: getResources().getDisplayMetrics():: heightPixels: 2392
2019-05-07 15:59:02.895 30818-30818/com.yongdaimi.android.androidapitest I/xp.chen: WindowManager:: widthPixels: 1440
2019-05-07 15:59:02.895 30818-30818/com.yongdaimi.android.androidapitest I/xp.chen: WindowManager:: heightPixels: 2392
2019-05-07 15:59:02.895 30818-30818/com.yongdaimi.android.androidapitest I/xp.chen: WindowManager getRealSize() :: widthPixels: 1440
2019-05-07 15:59:02.896 30818-30818/com.yongdaimi.android.androidapitest I/xp.chen: WindowManager getRealSize() :: heightPixels: 2560
2019-05-07 15:59:02.896 30818-30818/com.yongdaimi.android.androidapitest I/xp.chen: getResources() navigation_bar_height: 168
2019-05-07 15:59:02.896 30818-30818/com.yongdaimi.android.androidapitest I/xp.chen: getResources() getStatusBarHeight: 84
2019-05-07 15:59:02.967 30818-30818/com.yongdaimi.android.androidapitest I/xp.chen: getContentViewHeight(): 2112
2019-05-07 15:59:02.968 30818-30818/com.yongdaimi.android.androidapitest I/xp.chen: getStatusBarHeight2(): 84
参考链接:
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