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解决 App Inventor 2 Runtime Error运行时错误的专业指南 - App Inventor 2...
...赋值。可以通过增加条件判断来避免空指针异常。
数组越界错误
原因：访问数组时，索引超出了数组的范围。
解决方案：在访问数组元素前，检查索引是否在合法范围内。
文件或资源未找到错误
原因：应用尝...
解决 App Inventor 2 Runtime Error运行时错误的专业指南 - App Inventor 2...
...赋值。可以通过增加条件判断来避免空指针异常。
数组越界错误
原因：访问数组时，索引超出了数组的范围。
解决方案：在访问数组元素前，检查索引是否在合法范围内。
文件或资源未找到错误
原因：应用尝...
解决 App Inventor 2 Runtime Error运行时错误的专业指南 - App Inventor 2...
...赋值。可以通过增加条件判断来避免空指针异常。
数组越界错误
原因：访问数组时，索引超出了数组的范围。
解决方案：在访问数组元素前，检查索引是否在合法范围内。
文件或资源未找到错误
原因：应用尝...
Convert Json Array to normal Java list
Is there a way to convert JSON Array to normal Java Array for android ListView data binding?
14 Answers
...
How to use ArrayAdapter
...xml in layouts, but don't know how to show both reason and long_val in the ListView using ArrayAdapter.
5 Answers
...
Calling startActivity() from outside of an Activity context
I have implemented a ListView in my Android application. I bind to this ListView using a custom subclass of the ArrayAdapter class. Inside the overridden ArrayAdapter.getView(...) method, I assign an OnClickListener . In the onClick method of the OnClickListener , I want to launch a n...
How can I maintain fragment state when added to the back stack?
..._a, container, false);
// Find and setup subviews
_listView = (ListView)_rootView.findViewById(R.id.listView);
...
} else {
// Do not inflate the layout again.
// The returned View of onCreateView will be added into the fragment.
...
How to scroll to top of long ScrollView layout?
... i solve from scroll_view.smoothScrollTo(0,0), when we have listview in side the scrollview at that time fullScroll(ScrollView.FOCUS_UP) will not work.
– Kirtikumar A.
Oct 28 '13 at 8:56
...
What is the main purpose of setTag() getTag() methods of View?
...ence to object that references on some parts of layout (that displaying in ListView) instead of findViewById.
static class ViewHolder {
TextView tvPost;
TextView tvDate;
ImageView thumb;
}
public View getView(int position, View convertView, ViewGroup parent) {
if (convertView == n...
How to add a button to a PreferenceScreen?
... android:text="@string/saveAlarm"/>
</LinearLayout>
<ListView
android:id="@android:id/list"
android:layout_width="fill_parent"
android:layout_height="0dip"
android:layout_above="@id/bottom_control_bar"
android:layout_below="@id/top_contro...