使用标签在方法之间传递数据

Question

您是否只能为每个对象设置一个标签？我在自定义适配器类中有一个getView方法，我想将几​​条数据传递给我的onClick函数。我能传递一个字符串很好，但我也想在位置变量传递并不能弄清楚如何

@Override 
    public View getView(int position, View convertView, ViewGroup parent) { 
     View row = convertView; 
     if (row == null) { 
      LayoutInflater inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE); 
      row = inflater.inflate(R.layout.screen_grid_date, parent, false); 
     } 

     gridcell = (Button) row.findViewById(R.id.calendarDayButton); 
     gridcell.setOnClickListener(this); 

     gridcell.setTag("October");//This one gets passed fine 
     gridcell.setTag(position);//How can I pass this one as well?? 


     return row; 
    } 

    @Override 
    public void onClick(View view) { 
     String getString = (String) view.getTag(); 
     int getInt = (int) view.getTag(); 
     selectedDay.setText(getString); 
} 

我试着像一个指标设置标签：

 gridcell.setTag(1, "October"); 
     gridcell.setTag(2, position); 

但应用程序不断崩溃：

10-05 16:02:05.599 14723-14723/com.markfeldman.mycalendar E/AndroidRuntime﹕ FATAL EXCEPTION: main 
Process: com.markfeldman.mycalendar, PID: 14723 
java.lang.IllegalArgumentException: The key must be an application-specific resource id. 
     at android.view.View.setTag(View.java:17297) 
     at com.markfeldman.mycalendar.GridCellAdapter.getView(GridCellAdapter.java:173) 
     at android.widget.AbsListView.obtainView(AbsListView.java:2347) 
     at android.widget.GridView.onMeasure(GridView.java:1060) 
     at android.view.View.measure(View.java:17547) 
     at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5535) 
     at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1436) 
     at android.widget.LinearLayout.measureVertical(LinearLayout.java:722) 
     at android.widget.LinearLayout.onMeasure(LinearLayout.java:613) 
     at android.view.View.measure(View.java:17547) 
     at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5535) 
     at android.widget.FrameLayout.onMeasure(FrameLayout.java:436) 
     at android.view.View.measure(View.java:17547) 
     at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5535) 
     at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1436) 
     at android.widget.LinearLayout.measureVertical(LinearLayout.java:722) 
     at android.widget.LinearLayout.onMeasure(LinearLayout.java:613) 
     at android.view.View.measure(View.java:17547) 
     at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5535) 
     at android.widget.FrameLayout.onMeasure(FrameLayout.java:436) 
     at com.android.internal.policy.impl.PhoneWindow$DecorView.onMeasure(PhoneWindow.java:2615) 
     at android.view.View.measure(View.java:17547) 
     at android.view.ViewRootImpl.performMeasure(ViewRootImpl.java:2015) 
     at android.view.ViewRootImpl.measureHierarchy(ViewRootImpl.java:1173) 
     at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1379) 
     at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1061) 
     at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:5885) 
     at android.view.Choreographer$CallbackRecord.run(Choreographer.java:767) 
     at android.view.Choreographer.doCallbacks(Choreographer.java:580) 
     at android.view.Choreographer.doFrame(Choreographer.java:550) 
     at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:753) 
     at android.os.Handler.handleCallback(Handler.java:739) 
     at android.os.Handler.dispatchMessage(Handler.java:95) 
     at android.os.Looper.loop(Looper.java:135) 
     at android.app.ActivityThread.main(ActivityThread.java:5257) 
     at java.lang.reflect.Method.invoke(Native Method) 
     at java.lang.reflect.Method.invoke(Method.java:372) 

Answer 1

我想你有两个选择。您可以创建一个POJO，其中包含想要传递给View的所有数据，然后致电View#setTag(yourPojo)。

或者，您可以在视图上设置多个标签（就像您一直在尝试的那样）。问题是，在第一个参数View#setTag(int, Object)不只是一个简单的int，它实际上必须在规定的ID的SDK docs：

指定的关键应该是一个ID在 应用到资源宣布确保它是唯一的（请参阅ID资源类型）。

幸运的是，定义新ID非常容易，上面的链接很好地描述了过程。