误差获取应用程序

Question

的名单，我有以下代码来获取安装在手机上的应用程序的列表，但我收到以下错误：

Type mismatch: cannot convert from element type Object to ResolveInfo" for the list "for (ResolveInfo rInfo : list)" and also "List is a raw type. References to generic type List should be parameterized" for "List list = pm.queryIntentActivities...

public class safety extends Activity { 

    @Override 
    public void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     PackageManager pm = this.getPackageManager(); 

     Intent intent = new Intent(Intent.ACTION_MAIN, null); 
     intent.addCategory(Intent.CATEGORY_LAUNCHER); 

     List list = pm.queryIntentActivities(intent, PackageManager.PERMISSION_GRANTED); 
     for (ResolveInfo rInfo : list) { 
      Log.w("Installed Applications", rInfo.activityInfo.applicationInfo.loadLabel(pm).toString()); 
     } 
    } 
} 

有谁知道如何解决这些错误？

Answer 1

试试这个：

public class Safety extends Activity { 

    @Override 
    public void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     PackageManager pm = this.getPackageManager(); 

     Intent intent = new Intent(Intent.ACTION_MAIN, null); 
     intent.addCategory(Intent.CATEGORY_LAUNCHER); 

     ArrayList<ResolveInfo> list = (ArrayList<ResolveInfo>) pm.queryIntentActivities(intent, PackageManager.PERMISSION_GRANTED); 
     for (ResolveInfo rInfo : list) { 
      System.out.println("Installed Applications " + rInfo.activityInfo.applicationInfo.loadLabel(pm).toString()); 
     } 

    } 
}