ScreenUtils

/**
* 获得屏幕相关的辅助类
*/
public class ScreenUtils {

private ScreenUtils() {
throw new UnsupportedOperationException("cannot be instantiated");
}

public static int getDrawerWidth(Resources res) {
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB_MR2) {

if (res.getConfiguration().smallestScreenWidthDp >= 600 || res.getConfiguration().orientation == Configuration.ORIENTATION_LANDSCAPE) {
// device is a tablet
return (int) (320 * res.getDisplayMetrics().density);
} else {
return (int) (res.getDisplayMetrics().widthPixels - (70 * res.getDisplayMetrics().density));
}
} else { // for devices without smallestScreenWidthDp reference calculate if device screen is over 600 dp
if ((res.getDisplayMetrics().widthPixels / res.getDisplayMetrics().density) >= 600 || res.getConfiguration().orientation == Configuration.ORIENTATION_LANDSCAPE)
return (int) (320 * res.getDisplayMetrics().density);
else
return (int) (res.getDisplayMetrics().widthPixels - (70 * res.getDisplayMetrics().density));
}
}

/**
* 获取屏幕宽度
*
* @param context
* @return
*/
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
*
* @param context
* @return
*/
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;
}

/**
* 设置Activity状态栏颜色
*
* @param activity
* @param colorId
*/
public static void setStatusBarColor(Activity activity, int colorId) {
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
Window window = activity.getWindow();
window.clearFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS);
window.getDecorView().setSystemUiVisibility(View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN
| View.SYSTEM_UI_FLAG_LAYOUT_STABLE);
window.addFlags(WindowManager.LayoutParams.FLAG_DRAWS_SYSTEM_BAR_BACKGROUNDS);
window.setStatusBarColor(ContextCompat.getColor(activity, colorId));
}
}

/**
* 获取ActionBar高度
*
* @param context
* @return
*/
@TargetApi(14)
public static int getActionBarHeight(Context context) {
int result = 0;
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.ICE_CREAM_SANDWICH) {
TypedValue tv = new TypedValue();
context.getTheme().resolveAttribute(android.R.attr.actionBarSize, tv, true);
result = TypedValue.complexToDimensionPixelSize(tv.data, context.getResources().getDisplayMetrics());
}
return result;
}

/**
* 获取状态栏高度
*
* @param context
* @return
*/
public static int getStatusBarHeight(Context context) {
return getInternalDimensionSize(context.getResources(), "status_bar_height");
}

private static int getInternalDimensionSize(Resources res, String key) {
int result = 0;
int resourceId = res.getIdentifier(key, "dimen", "android");
if (resourceId > 0) {
result = res.getDimensionPixelSize(resourceId);
}
return result;
}

/**
* 获取当前屏幕截图，包含状态栏
*
* @param activity
* @return
*/
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 bitmap = Bitmap.createBitmap(bmp, 0, 0, width, height);
view.destroyDrawingCache();
return bitmap;
}

/**
* 获取当前屏幕截图，不包含状态栏
*
* @param activity
* @return
*/
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 bitmap = Bitmap.createBitmap(bmp, 0, statusBarHeight, width, height - statusBarHeight);
view.destroyDrawingCache(http://www.amjmh.com/v/BIBRGZ_558768/);
return bitmap;
}
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