老代码中的ListView移植到新的ads时,发现布局文件有异常,百度后解决,增加一行即可:
app:layout_constraintTop_toTopOf="parent"
布局代码全部:
<ListView
android:id="@+id/lvMain"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:dividerHeight="1px"
app:layout_constraintTop_toTopOf="parent"
/>
java代码:
......
ListView lv = (ListView) findViewById(R.id.lvMain);
String[] data = {"sfdsf", "fadf", "fasdf"};
ArrayAdapter<String> adt = new ArrayAdapter<>(this, android.R.layout.simple_list_item_1, data);
lv.setAdapter(adt);
......