发布于 2016-03-06 09:14:34 | 142 次阅读 | 评论: 0 | 来源: 网友投递
Android移动端操作系统
Android是一种基于Linux的自由及开放源代码的操作系统，主要使用于移动设备，如智能手机和平板电脑，由Google公司和开放手机联盟领导及开发。尚未有统一中文名称，中国大陆地区较多人使用“安卓”或“安致”。
@Override
protected void onStop() {
if (!isAppOnForeground()) {
Debug.i("dwy", "enter background");
mIsBackground = true;
} else {
Debug.i("dwy", "foreground");
mIsBackground = false;
} Judge is App in background when onStop() get called.
public boolean isAppOnForeground() {
// Returns a list of application processes that are running on the
// device
ActivityManager activityManager = (ActivityManager) getApplicationContext().getSystemService(Context.ACTIVITY_SERVICE);
String packageName = getApplicationContext().getPackageName();
List<ActivityManager.RunningAppProcessInfo> appProcesses = activityManager
.getRunningAppProcesses();
if (appProcesses == null)
return false;
for (ActivityManager.RunningAppProcessInfo appProcess : appProcesses) {
// The name of the process that this object is associated with.
if (appProcess.processName.equals(packageName)
&& appProcess.importance == ActivityManager.RunningAppProcessInfo.IMPORTANCE_FOREGROUND) {
return true;
}
}
return false;
}
方法二：
/**
* 需要权限:android.permission.GET_TASKS
*
* @param context
* @return
*/
public boolean isApplicationBroughtToBackground(Context context) {
ActivityManager am = (ActivityManager) context
.getSystemService(Context.ACTIVITY_SERVICE);
List<RunningTaskInfo> tasks = am.getRunningTasks(1);
if (tasks != null && !tasks.isEmpty()) {
ComponentName topActivity = tasks.get(0).topActivity;
Debug.i(TAG, "topActivity:" + topActivity.flattenToString());
Debug.f(TAG, "topActivity:" + topActivity.flattenToString());
if (!topActivity.getPackageName().equals(context.getPackageName())) {
return true;
}
}
return false;
}