Android 获取当前打开的应用程序包名称

Question

我正在使用自定义键盘，当键盘打开时我需要当前的包名称。这个键盘将打开不同的不同应用程序，所以我需要当前打开的应用程序包名称。我正在使用以下代码，但它无法正常工作。

   ActivityManager mActivityManager = (ActivityManager)PhotoActivity.this.getSystemService(Context.ACTIVITY_SERVICE);
            if(Build.VERSION.SDK_INT > 20){
                String mPackageName = mActivityManager.getRunningAppProcesses().get(0).processName;
                Log.e("Checking package:      ","Checking current application package"+mPackageName);
            }
            else{
                String mPackageName = mActivityManager.getRunningTasks(1).get(0).topActivity.getPackageName();
            }

Answer 1

ActivityManager am = (ActivityManager) getSystemService(ACTIVITY_SERVICE);
List<ActivityManager.RunningTaskInfo> taskInfo = am.getRunningTasks(1);

Log.d("current task :", "CURRENT Activity ::" + taskInfo.get(0).topActivity.getPackageName());

Answer 2

使用以下代码：-

 ActivityManager am = (ActivityManager) this.getSystemService(ACTIVITY_SERVICE);
List l = am.getRecentTasks(1, ActivityManager.RECENT_WITH_EXCLUDED);
Iterator i = l.iterator();
PackageManager pm = this.getPackageManager();
while (i.hasNext()) {
    ActivityManager.RunningAppProcessInfo info = (ActivityManager.RunningAppProcessInfo)(i.next());
    try {
        CharSequence c = pm.getApplicationLabel(pm.getApplicationInfo(
        info.processName, PackageManager.GET_META_DATA));
        Log.w("LABEL", c.toString());
    } catch (Exception e) {
        // Name Not FOund Exception
    }
}

并且不要忘记使用权限

<uses-permission android:name="android.permission.GET_TASKS"/>

Answer 3

在android

中获取当前包名称

     ActivityManager am = (ActivityManager) this.getSystemService(ACTIVITY_SERVICE);
     List<ActivityManager.RunningTaskInfo> taskInfo = am.getRunningTasks(1);

// display the current class name
         Toast.makeText(getApplicationContext(), taskInfo.get(0).topActivity.getClassName(), Toast.LENGTH_LONG).show();
         ComponentName componentInfo = taskInfo.get(0).topActivity;

// current class package name
             String packageName = componentInfo.getPackageName();

将此添加到您的项目清单权限

<uses-permission android:name="android.permission.GET_TASKS"/>

Android 获取当前打开的应用程序包名称

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