Android 使用标记在方法之间传递数据
每个对象只能设置一个标记吗?我在一个自定义适配器类中有一个getView方法,我想将几段数据传递给onClick函数。我可以很好地传递字符串,但我也想传递position变量,但不知道如何传递Android 使用标记在方法之间传递数据,android,Android,每个对象只能设置一个标记吗?我在一个自定义适配器类中有一个getView方法,我想将几段数据传递给onClick函数。我可以很好地传递字符串,但我也想传递position变量,但不知道如何传递 @Override public View getView(int position, View convertView, ViewGroup parent) { View row = convertView; if (row == null) {
@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);
}
我尝试为标记设置索引,如:
gridcell.setTag(1, "October");
gridcell.setTag(2, position);
但该应用程序不断崩溃:
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)
我想你有两个选择。您可以创建一个包含要传递到视图的所有数据的POJO,然后调用
View\setTag(yourPojo)
或者,您可以在视图上设置多个标记(正如您一直尝试的那样)。问题在于View#setTag(int,Object)
的第一个参数不仅仅是一个简单的int
,它实际上必须是一个:
指定的密钥应该是在
应用程序以确保其唯一性(请参阅ID资源类型)
幸运的是,定义新ID相当容易,上面的链接很好地描述了这个过程。我想您有两个选择。您可以创建一个包含要传递到视图的所有数据的POJO,然后调用
View\setTag(yourPojo)
或者,您可以在视图上设置多个标记(正如您一直尝试的那样)。问题在于View#setTag(int,Object)
的第一个参数不仅仅是一个简单的int
,它实际上必须是一个:
指定的密钥应该是在
应用程序以确保其唯一性(请参阅ID资源类型)
幸运的是,定义新ID相当容易,上面的链接很好地描述了过程。您需要自己编写
setTag(instanceofyourobject,其中包含您需要的所有数据)
您需要自己编写setTag(instanceofyourobject,其中包含所需的所有数据)