/**
* 獲得屬於案頭的應用的應用程式套件名稱
* @return 返回包含所有包名的字串列表
*/
private List<String> getHomes() {
List<String> names = new ArrayList<String>();
PackageManager packageManager = this.getPackageManager();
//屬性
Intent intent = new Intent(Intent.ACTION_MAIN);
intent.addCategory(Intent.CATEGORY_HOME);
List<ResolveInfo> resolveInfo = packageManager.queryIntentActivities(intent,
PackageManager.MATCH_DEFAULT_ONLY);
for(ResolveInfo ri : resolveInfo){
names.add(ri.activityInfo.packageName);
Log.i("zhangyinfu PinyinIME.java", "packageName =" + ri.activityInfo.packageName);
}
return names;
}
分析:1)既然要判斷當前介面,那就要判斷當前的RunningTasks中的第一個;
2)引入ActivityManager擷取RunningTasks;
3)取出RunningTasks中的topActivity的PackageName;
4)最後跟第一步得到的List做比較即可!
5)需添加相關許可權
<uses-permission android:name="android.permission.GET_TASKS" />
/**
* 判斷當前介面是否是案頭
*/
public boolean isHome(){
ActivityManager mActivityManager = (ActivityManager)getSystemService(Context.ACTIVITY_SERVICE);
List<RunningTaskInfo> rti = mActivityManager.getRunningTasks(1);
List<String> strs = getHomes();
if(strs != null && strs.size() > 0){
return strs.contains(rti.get(0).topActivity.getPackageName());
}else{
return false;
}
}
原文地址:http://www.linuxidc.com/Linux/2012-02/54987.htm