/*********************************************************** * author colin * company fosung * email wanglin2046@126.com * date 16-7-15 下午4:41 **********************************************************/ package com.fosung.libeasypr.util; import android.annotation.TargetApi; import android.app.Activity; import android.content.ContentResolver; import android.content.Context; import android.content.res.Configuration; import android.content.res.Resources; import android.graphics.Bitmap; import android.graphics.ColorMatrix; import android.graphics.ColorMatrixColorFilter; import android.graphics.Paint; import android.graphics.Rect; import android.net.Uri; import android.os.Build; import android.provider.Settings; import android.util.DisplayMetrics; import android.view.View; import android.view.WindowManager; /** * 屏幕工具 */ public class ScreenUtil { /** * 获取屏幕宽度 */ public static int getScreenWidth(Context context) { WindowManager wm = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE); DisplayMetrics outMetrics = new DisplayMetrics(); wm.getDefaultDisplay() .getMetrics(outMetrics); return outMetrics.widthPixels; } /** * 获取屏幕高度 */ public static int getScreenHeight(Context context) { WindowManager wm = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE); DisplayMetrics outMetrics = new DisplayMetrics(); wm.getDefaultDisplay() .getMetrics(outMetrics); return outMetrics.heightPixels; } /** * 获取当前窗口的高度， 该高度是不包含导航栏和状态栏的 */ public static int getWindowHeight(Activity activity) { return activity.getWindow() .getWindowManager() .getDefaultDisplay() .getHeight(); } /** * 精确获取屏幕尺寸（例如：3.5、4.0、5.0寸屏幕） * * @return 设备尺寸 */ public static double getScreenPhysicalSize(Activity activity) { DisplayMetrics dm = activity.getResources() .getDisplayMetrics(); double diagonalPixels = Math.sqrt(Math.pow(dm.widthPixels, 2) + Math.pow(dm.heightPixels, 2)); return diagonalPixels / (dm.densityDpi); } /** * 判断是否是平板（官方用法） */ public static boolean isTablet(Context context) { return (context.getResources() .getConfiguration().screenLayout & Configuration.SCREENLAYOUT_SIZE_MASK) >= Configuration.SCREENLAYOUT_SIZE_LARGE; } /** * 获取导航栏高度 */ public static int getNavigationBarHeight(Context context) { Resources resources = context.getResources(); int resourceId = resources.getIdentifier("navigation_bar_height", "dimen", "android"); if (resourceId > 0) { return resources.getDimensionPixelSize(resourceId); } return 0; } /** * 用于获取状态栏的高度。 * * @return 返回状态栏高度的像素值。 */ public static int getStatusBarHeight(Activity context) { int statusBarHeight = 0; try { Resources res = context.getResources(); int resourceId = res.getIdentifier("status_bar_height", "dimen", "android"); if (resourceId > 0) { statusBarHeight = res.getDimensionPixelSize(resourceId); } } catch (Exception e) { e.printStackTrace(); } if (statusBarHeight == 0) { Rect frame = new Rect(); context.getWindow() .getDecorView() .getWindowVisibleDisplayFrame(frame); statusBarHeight = frame.top; } return statusBarHeight; } /** * 获取当前屏幕截图，包含状态栏 */ public static Bitmap snapShotWithStatusBar(Activity activity) { View view = activity.getWindow() .getDecorView(); view.setDrawingCacheEnabled(true); view.buildDrawingCache(); Bitmap bmp = view.getDrawingCache(); int width = getScreenWidth(activity); int height = getScreenHeight(activity); Bitmap bp = null; bp = Bitmap.createBitmap(bmp, 0, 0, width, height); view.destroyDrawingCache(); return bp; } /** * 获取当前屏幕截图，不包含状态栏 */ public static Bitmap snapShotWithoutStatusBar(Activity activity) { View view = activity.getWindow() .getDecorView(); view.setDrawingCacheEnabled(true); view.buildDrawingCache(); Bitmap bmp = view.getDrawingCache(); Rect frame = new Rect(); activity.getWindow() .getDecorView() .getWindowVisibleDisplayFrame(frame); int statusBarHeight = frame.top; int width = getScreenWidth(activity); int height = getScreenHeight(activity); Bitmap bp = null; bp = Bitmap.createBitmap(bmp, 0, statusBarHeight, width, height - statusBarHeight); view.destroyDrawingCache(); return bp; } /** * 设置灰度 * * @param greyScale true:灰度 */ @TargetApi(Build.VERSION_CODES.HONEYCOMB) public static void setGreyScale(View v, boolean greyScale) { if (greyScale) { // Create a paint object with 0 saturation (black and white) ColorMatrix cm = new ColorMatrix(); cm.setSaturation(0); Paint greyScalePaint = new Paint(); greyScalePaint.setColorFilter(new ColorMatrixColorFilter(cm)); // Create a hardware layer with the greyScale paint v.setLayerType(View.LAYER_TYPE_HARDWARE, greyScalePaint); } else { // Remove the hardware layer v.setLayerType(View.LAYER_TYPE_NONE, null); } } /** * 判断是否开启了自动亮度调节 */ public static boolean isAutoBrightness(ContentResolver aContentResolver) { boolean automicBrightness = false; try { automicBrightness = Settings.System.getInt(aContentResolver, Settings.System.SCREEN_BRIGHTNESS_MODE) == Settings.System.SCREEN_BRIGHTNESS_MODE_AUTOMATIC; } catch (Settings.SettingNotFoundException e) { e.printStackTrace(); } return automicBrightness; } /** * 获取屏幕的亮度 */ public static float getScreenBrightness(Activity activity) { int nowBrightnessValue = 0; ContentResolver resolver = activity.getContentResolver(); try { nowBrightnessValue = Settings.System.getInt( resolver, Settings.System.SCREEN_BRIGHTNESS); } catch (Exception e) { e.printStackTrace(); } return nowBrightnessValue; } /** * 设置亮度(手动设置亮度，需要关闭自动设置亮度的开关) * * @param brightness 0-1 */ public static void setBrightness(Activity activity, float brightness) { stopAutoBrightness(activity); WindowManager.LayoutParams lp = activity.getWindow() .getAttributes(); lp.screenBrightness = brightness * (1f / 255f); activity.getWindow() .setAttributes(lp); } /** * 停止自动亮度调节 */ public static void stopAutoBrightness(Activity activity) { Settings.System.putInt(activity.getContentResolver(), Settings.System.SCREEN_BRIGHTNESS_MODE, Settings.System.SCREEN_BRIGHTNESS_MODE_MANUAL); } /** * 开启亮度自动调节 */ public static void startAutoBrightness(Activity activity) { Settings.System.putInt(activity.getContentResolver(), Settings.System.SCREEN_BRIGHTNESS_MODE, Settings.System.SCREEN_BRIGHTNESS_MODE_AUTOMATIC); } /** * 保存亮度设置状态 */ public static void saveBrightness(ContentResolver resolver, int brightness) { Uri uri = Settings.System .getUriFor("screen_brightness"); Settings.System.putInt(resolver, "screen_brightness", brightness); // resolver.registerContentObserver(uri, true, myContentObserver); resolver.notifyChange(uri, null); } }