android获取最近使用应用的信息

ActivityManager mActivityManager = (ActivityManager) context.getSystemService(Context.ACTIVITY_SERVICE) ;

List appList4 = mActivityManager

.getRecentTasks(100, 1);

for (ActivityManager.RecentTaskInfo running : appList4) {

System.out.println(running.origActivity.getClassName());

}

这个方法有个最坑爹的地方，我不理解他们是怎么搞的，都没试过的吧，running.origActivity这个是输出null来的，有大牛知道的指点下

后来我参照了别人的方法，这样才可以

PackageManager pm = this.getPackageManager();

ActivityManager mActivityManager = (ActivityManager) MainActivity.this

.getSystemService(Context.ACTIVITY_SERVICE);

List appList4 = mActivityManager

.getRecentTasks(5, ActivityManager.RECENT_WITH_EXCLUDED);//参数，前一个是你要取的最大数，后一个是状态

for (ActivityManager.RecentTaskInfo running : appList4) {

Intent intent = running.baseIntent;

ResolveInfo resolveInfo = pm.resolveActivity(intent, 0);

if (resolveInfo != null)

｛

System.out.println(resolveInfo.activityInfo.packageName "n");//获取应用包名

System.out.println(resolveInfo.loadLabel(pm).toString() "n");//获取应用名

// System.out.println(resolveInfo.loadIcon(pm) "n");//获取应用头标

｝

}

最后在Mainfest声明权限

原文地址： http://my.eoe.cn/693212/archive/4670.html