在我的代码中一切正常,直到我将此处显示的这段代码放在其他代码中的任何位置以访问 xml 页脚布局中的 TextView:
TextView totalTextView = (TextView) footer.findViewById(R.id.total_text);
totalTextView.setText(totalPrice);
total_text
是一个 TextView,它位于我用作页脚的 xml 文件中。
这个名为alternative.xml 的页脚xml 布局显示在ListView 的底部,其中填充了适配器使用不同的xml 布局填充的其他项目。这个页脚布局文件中唯一的东西是名为total_text
.
如何在页脚 xml 布局中访问这个TextView
调用?total_text
这是来自 Logcat 的堆栈跟踪:
FATAL EXCEPTION`: main
java.lang.RuntimeException: Unable to start activityComponentInfo{com.forever.scrollcheck/com.forever.scrollcheck.MainActivity}:
android.content.res.Resources$NotFoundException: String resource ID #0x543a8
E/AndroidRuntime(8208): at adroid.app.ActivityThread.performLaunchActivity(ActivityThread.java:1956)
E/AndroidRuntime(8208): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1981)
E/AndroidRuntime(8208): at android.app.ActivityThread.access$600(ActivityThread.java:123)
E/AndroidRuntime(8208): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1147)
E/AndroidRuntime(8208): at android.os.Handler.dispatchMessage(Handler.java:99)
E/AndroidRuntime(8208): at android.os.Looper.loop(Looper.java:137)
E/AndroidRuntime(8208) :at android.app.ActivityThread.main(ActivityThread.java:4424)
E/AndroidRuntime(8208): at java.lang.reflect.Method.invokeNative(Native Method)
E/AndroidRuntime(8208): at java.lang.reflect.Method.invoke(Method.java:511)
E/AndroidRuntime(8208): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:784)
这是 Activity 类中的代码:
listView = (ListView) findViewById(R.id.listView);
View footer = getLayoutInflater().inflate(R.layout.alternative, null);
TextView totalTextView = (TextView) footer.findViewById(R.id.total_text);
totalTextView.setText(totalPrice);
listView.addFooterView(footer);
MobileArrayAdapter adapter = new MobileArrayAdapter(this, R.layout.row_layout, ckbInfo);
listView.setAdapter(adapter);
ArrayAdapter 类中嵌套在 Activity 类中的代码:
public class MobileArrayAdapter extends ArrayAdapter<CheckBoxInfo>{
CheckBoxInfo[] objects;
Context context;
int textViewResourceId;
public MobileArrayAdapter(Context context, int textViewResourceId,
CheckBoxInfo[] objects) {
super(context, textViewResourceId, objects);
this.context = context;
this.textViewResourceId = textViewResourceId;
this.objects = objects;
}
@Override
public View getView(final int position, View convertView, ViewGroup parent) {
View row_layout_view = convertView;
if ((row_layout_view == null)){
LayoutInflater inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
row_layout_view = inflater.inflate(R.layout.row_layout, null);
}
//CheckBoxInfo item = objects.get(position); // for arrayList
CheckBoxInfo item = objects[position];
if(item != null){
TextView textView = (TextView) row_layout_view.findViewById(R.id.textView1);
final CheckBox checkBox = (CheckBox) row_layout_view.findViewById(R.id.checkBox1);
TextView priceTextView = (TextView) row_layout_view.findViewById(R.id.price1);
checkBox.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View arg0) {
final boolean isChecked = checkBox.isChecked();
if(isChecked==true){
Toast.makeText(MainActivity.this,"box is checked for position " + position, Toast.LENGTH_SHORT).show();
}else if(isChecked==false){
Toast.makeText(MainActivity.this,"box is NOT checked for " + position, Toast.LENGTH_SHORT).show();
}
}
});
if(item !=null){
textView.setText(item.checkBoxName);
checkBox.setChecked(item.checkBoxState);
priceTextView.setText(String.valueOf(item.price));
}
}
return row_layout_view;
}
}
编辑:这里要求的是来自alternative.xml的代码:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:gravity="center" >
<TextView
android:id="@+id/total_text"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="XXXXXX"
android:textAppearance="?android:attr/textAppearanceLarge" />
</LinearLayout>