Android的新手,对不起,如果我应该包含的内容,我不会。
无论如何,我试图为列表制作自定义布局。每当我尝试运行应用程序时,它都会关闭并发送一个" AppName已崩溃"错误模式。当我使用内置的Android布局时,这并没有发生。我不确定问题是我的代码还是我的模拟器(在带有1GB RAM的Nexus 5上运行)
此处layout/row_layout.xml
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
tools:context=".MainActivity">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/textView1"
android:textSize="50sp"
android:textStyle="bold"
android:padding="15dp"/>
</LinearLayout>
此处layout/activity_main.xml
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
android:paddingBottom="@dimen/activity_vertical_margin"
android:orientation="vertical"
tools:context=".MainActivity">
<ListView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="@+id/theListView"></ListView>
</LinearLayout>
这里是onCreate
中的MainActivity.java
方法(我还没有编辑任何其他内容)
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
String[] favoriteTVShows = {"The Office", "The Wire", "Mr. Robot", "Parks and Rec",
"Fool Us", "Garbage Time", "Last Week Tonight", "Silicon Valley"};
ListAdapter theAdapter = new ArrayAdapter<String>(this, R.layout.row_layout,
favoriteTVShows);
ListView theListView = (ListView) findViewById(R.id.theListView);
theListView.setAdapter(theAdapter);
theListView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> adapterView,
View view, int position,
long id) {
String tvShowPicked = "You selected " +
String.valueOf(adapterView
.getItemAtPosition(position));
Toast.makeText(MainActivity.this, tvShowPicked,
Toast.LENGTH_SHORT).show();
}
});
}
答案 0 :(得分:0)
您必须将适配器设置为可以包含文本的视图,这意味着不使用LinearLayout作为基础,而是使用TextView:
<TextView
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/textView1"
android:textSize="50sp"
android:textStyle="bold"
android:padding="15dp"/>