Android获取手机屏幕参数的工具

package com.manny.utils;

import android.app.Activity;
import android.content.Context;
import android.content.res.Resources;
import android.graphics.Bitmap;
import android.graphics.Rect;
import android.view.View;

/**
* Created by manny on 2017/12/28.
*/

public class ScreenUtils
{
private ScreenUtils()
{
/* cannot be instantiated */
throw new UnsupportedOperationException( “cannot be instantiated” );
}

/** * 获得屏幕密度density */public static float getDensity( Context context ){    return context.getResources().getDisplayMetrics().density;}/** * 获得屏幕宽度 */public static int getScreenWidth( Context context ){    return context.getResources().getDisplayMetrics().widthPixels;}/** * 获得屏幕高度 */public static int getScreenHeight( Context context ){    return context.getResources().getDisplayMetrics().heightPixels;}/** * 获得状态栏的高度 */public static int getStatusHeight( Context context ){    if( context != null )    {        int statusBarHeight = 0;        Resources res = context.getResources();        int resourceId = res.getIdentifier( "status_bar_height", "dimen", "android" );        if( resourceId > 0 )        {            statusBarHeight = res.getDimensionPixelSize( resourceId );        }        return statusBarHeight;    }    return -1;}/** * 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;}

}

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