如何從類<?>創建新班級？

Question

出於好奇。我怎樣才能創建一個新的類，其中構造函數不需要參數？這裏有一個例子：

public static BroadcastReceiver startBroadcastReceiver(Context context, Class<?> receiverClass, String receiverTag) { 
    BroadcastReceiver receiver = null; 

    IntentFilter intentFilter = new IntentFilter(receiverTag); 

    receiver = new receiverClass(); // <---- What's the correct syntax? 

    if (receiver != null && intentFilter != null) { 
     context.registerReceiver(receiver, intentFilter); 
    } 

    return receiver; 
} 

這是我會怎麼稱呼它：

MyTools.startBroadcastReceiver(context, MyBroadcastReceiver, MyBroadcastReceiver.TAG); 

在此先感謝。

Answer 1

使用此：

try{ 
    receiver = (BroadcastReceiver) receiverClass.newInstance(); 
}catch(Exception e){ 
    //do stuff 
} 

你要給它

MyTools.startBroadcastReceiver(context, MyBroadcastReceiver.class, MyBroadcastReceiver.TAG);