获取当前栈顶的activity

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我是靠谱客的博主精明往事，这篇文章主要介绍获取当前栈顶的activity，现在分享给大家，希望可以做个参考。

/**
 * 得到栈顶的activity
 * 路径+类名
 * 需要在清单文件中添加权限 <uses-permission android:name = “android.permission.GET_TASKS”/>
 */
public static String getTopActivity(Activity context) {
ActivityManager manager = (ActivityManager) context.getSystemService(ACTIVITY_SERVICE);


List<ActivityManager.RunningTaskInfo> runningTaskInfos = manager.getRunningTasks(1);

ComponentName componentName;

if (runningTaskInfos != null) {
componentName = runningTaskInfos.get(0).topActivity;

String result = componentName.getPackageName() + "." + componentName.getClassName();

return result;

} else {
return null;

}
}