package com.lcjian.library.util;
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import android.app.Activity;
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import android.content.Context;
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import android.graphics.Bitmap;
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import android.graphics.Rect;
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import android.util.DisplayMetrics;
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import android.view.View;
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import android.view.WindowManager;
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/**
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* 获得屏幕相关的辅助类
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*
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* @author zhy
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*
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*/
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public class ScreenUtils
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{
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private ScreenUtils()
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{
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/* cannot be instantiated */
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throw new UnsupportedOperationException("cannot be instantiated");
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}
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/**
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* 获得屏幕高度
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*
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* @param context
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* @return
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*/
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public static int getScreenWidth(Context context)
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{
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WindowManager wm = (WindowManager) context
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.getSystemService(Context.WINDOW_SERVICE);
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DisplayMetrics outMetrics = new DisplayMetrics();
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wm.getDefaultDisplay().getMetrics(outMetrics);
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return outMetrics.widthPixels;
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}
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/**
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* 获得屏幕宽度
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*
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* @param context
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* @return
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*/
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public static int getScreenHeight(Context context)
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{
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WindowManager wm = (WindowManager) context
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.getSystemService(Context.WINDOW_SERVICE);
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DisplayMetrics outMetrics = new DisplayMetrics();
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wm.getDefaultDisplay().getMetrics(outMetrics);
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return outMetrics.heightPixels;
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}
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/**
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* 获得状态栏的高度
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*
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* @param context
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* @return
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*/
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public static int getStatusHeight(Context context)
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{
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int statusHeight = -1;
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try
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{
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Class<?> clazz = Class.forName("com.android.internal.R$dimen");
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Object object = clazz.newInstance();
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int height = Integer.parseInt(clazz.getField("status_bar_height")
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.get(object).toString());
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statusHeight = context.getResources().getDimensionPixelSize(height);
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} catch (Exception e)
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{
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e.printStackTrace();
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}
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return statusHeight;
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}
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/**
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* 获取当前屏幕截图，包含状态栏
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*
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* @param activity
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* @return
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*/
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public static Bitmap snapShotWithStatusBar(Activity activity)
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{
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View view = activity.getWindow().getDecorView();
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view.setDrawingCacheEnabled(true);
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view.buildDrawingCache();
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Bitmap bmp = view.getDrawingCache();
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int width = getScreenWidth(activity);
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int height = getScreenHeight(activity);
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Bitmap bp = null;
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bp = Bitmap.createBitmap(bmp, 0, 0, width, height);
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view.destroyDrawingCache();
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return bp;
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}
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/**
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* 获取当前屏幕截图，不包含状态栏
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*
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* @param activity
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* @return
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*/
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public static Bitmap snapShotWithoutStatusBar(Activity activity)
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{
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View view = activity.getWindow().getDecorView();
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view.setDrawingCacheEnabled(true);
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view.buildDrawingCache();
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Bitmap bmp = view.getDrawingCache();
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Rect frame = new Rect();
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activity.getWindow().getDecorView().getWindowVisibleDisplayFrame(frame);
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int statusBarHeight = frame.top;
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int width = getScreenWidth(activity);
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int height = getScreenHeight(activity);
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Bitmap bp = null;
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bp = Bitmap.createBitmap(bmp, 0, statusBarHeight, width, height
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- statusBarHeight);
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view.destroyDrawingCache();
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return bp;
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}
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}
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