Android onListItem单击活动扩展ListActivity
我尝试使用listview,但当我单击某个元素时,我没有看到我的toastAndroid onListItem单击活动扩展ListActivity,android,listview,Android,Listview,我尝试使用listview,但当我单击某个元素时,我没有看到我的toast public class MarkersListActivity extends ListActivity { @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); String[] titles = new String[] {"T
public class MarkersListActivity extends ListActivity {
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
String[] titles = new String[] {"Titre 1", "Titre 2", "Titre 3", "Titre 4"};
String[] des = new String[] {"des 1", "des 2", "des 3", "des 4"};
setListAdapter( new MarkerListArrayAdapter(this, titles, des));
}
@Override
protected void onListItemClick(ListView l, View v, int position, long id) {
//get selected items
String selectedValue = (String) getListAdapter().getItem(position);
Toast.makeText(this, selectedValue, Toast.LENGTH_SHORT).show();
}
}
MarkerListarayAdapter
public class MarkerListArrayAdapter extends ArrayAdapter<String> {
private final Context context;
private final String[] titleText;
private final String[] descriptionText;
public MarkerListArrayAdapter(Context context, String[] titles, String[] description) {
super(context, R.layout.marker_list_layout, titles);
this.context = context;
this.titleText = titles;
this.descriptionText = description;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
LayoutInflater inflater = (LayoutInflater) context
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
View rowView = inflater.inflate(R.layout.marker_list_layout, parent, false);
TextView title = (TextView) rowView.findViewById(R.id.title);
TextView description = (TextView) rowView.findViewById(R.id.description);
ImageView imageView = (ImageView) rowView.findViewById(R.id.image);
title.setText(titleText[position]);
description.setText(descriptionText[position]);
imageView.setBackgroundColor(Color.argb(255,255,0,0));
return rowView;
}
}
公共类MarkerListarayAdapter扩展了ArrayAdapter{
私人最终语境;
私有最终字符串[]titleText;
私有最终字符串[]descriptionText;
public markerListarayAdapter(上下文上下文、字符串[]标题、字符串[]说明){
超级(上下文、右布局、标记、列表、标题);
this.context=上下文;
this.titleText=标题;
this.descriptionContext=描述;
}
@凌驾
公共视图getView(int位置、视图转换视图、视图组父视图){
LayoutFlater充气器=(LayoutFlater)上下文
.getSystemService(上下文布局\充气机\服务);
视图行视图=充气机。充气(R.layout.marker\u list\u布局,父级,false);
TextView title=(TextView)rowView.findViewById(R.id.title);
TextView description=(TextView)rowView.findViewById(R.id.description);
ImageView ImageView=(ImageView)rowView.findViewById(R.id.image);
title.setText(titleText[职位]);
description.setText(descriptionText[位置]);
setBackgroundColor(Color.argb(255255,0,0));
返回行视图;
}
}
xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:padding="5dp" >
<ImageView
android:id="@+id/image"
android:layout_width="50dp"
android:layout_height="50dp"
android:layout_marginLeft="5dp"
android:layout_marginRight="20dp"
android:layout_marginTop="5dp"
android:src="@drawable/transparent" >
</ImageView>
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical" >
<TextView
android:id="@+id/title"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@+id/label"
android:textSize="30sp" >
</TextView>
<TextView
android:id="@+id/description"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@+id/label"
android:textSize="15sp" />
</LinearLayout>
</LinearLayout>
谢谢您应该使用:
public void onItemClick(AdapterView<?> parent, View v, int position, long id)
您尚未调用
onListItemClick()
的super。。。
按以下步骤进行:
protected void onListItemClick(ListView l, View v, int position, long id){
super.onListItemClick(l, v, position, id);
}
您必须在MarkersListActivity类中设置setContentView(R.layout.activity_main)方法,并且您的listviewID应该是“@android:ID/list” 添加此布局活动\u main
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingLeft="8dp"
android:paddingRight="8dp">
<ListView android:id="@android:id/list" //Important this one.
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#00FF00"
android:layout_weight="1"
android:drawSelectorOnTop="false"/>
</LinearLayout>
查看listactivity的官方文档
你能发布你的列表项布局文件吗?我用所有代码更新我的帖子尝试将根
LinearLayou
的layou
设置为fill\u parent
谢谢,我没有点击文本,现在可以了。有时视图焦点有问题,请检查,例如,这不是必需的onListItemClick默认为空。添加super时我总是遇到同样的问题
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingLeft="8dp"
android:paddingRight="8dp">
<ListView android:id="@android:id/list" //Important this one.
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#00FF00"
android:layout_weight="1"
android:drawSelectorOnTop="false"/>
</LinearLayout>