Question

我正在自定义适配器类中创建多个视图。我希望每个视图与两个TextView对象相关联，每个TextView对象都有不同的字符串作为主要文本。我在getView和onClick函数之间传递字符串时遇到问题。我能够使用标签让它与我的一个对象（gridcell）一起工作

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

    gridcell.setTag(themonth + " " + theday + " " + theyear);
    return row;
}


@Override
public void onClick(View view) {
    String month_day_year = (String) view.getTag();

    selectedDay.setText(month_day_year);//WORKS FIN
}

但我无法弄清楚如何使用多个对象。下面，我添加了另一个名为test的TextView对象。如何让TextView使用标签获取另一个String？我尝试使用index int然后使用setTag参数中的String，但应用程序仍然崩溃：

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

    gridcell.setTag(1, themonth + " " + theday + " " + theyear);
    test.setTag(2,"Test");
    return row;
}


@Override
public void onClick(View view) {
    String month_day_year = (String) view.getTag(1);
    String Test = (String) view.getTag(2)

    selectedDay.setText(Test);
}

我不熟悉一般使用标签，并且想知道如何将String值从一个方法传递给下一个方法。每次我尝试将Integer设置为标记时，我的log cat中都会出现以下错误：

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)
        at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:903)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:698)

10-05 16:07:06.043 14723-14723 /？ I /处理：发送信号。 PID：14723 SIG：9

Answer 1

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 = (TextView) row.findViewById(R.id.calendarDayButton);
    test = (TextView) row.findViewById(R.id.test);
    gridcell.setOnClickListener(this);
    // add click listener for test too
    test.setOnClickListener(this);

    gridcell.setTag(1, themonth + " " + theday + " " + theyear);
    test.setTag(2,"Test");
    return row;
}


@Override
public void onClick(View view) {
  switch(view.getId()){
   case R.id. calendarDayButton:
     String month_day_year = (String) view.getTag(1);
     break;
   case R.id. test:
     String Test = (String) view.getTag(2);
     selectedDay.setText(Test);
     break;
  }
}

使用标签传递字符串

1 个答案: