我正在尝试创建一个Request Responses活动并获取itemSelected以使用下一个活动,该活动将它们存储到用户友好列表中。但是当单击“接受”按钮时,itemSelected不返回任何内容。(它应该在toast对话框中显示itemSelected)任何人都知道它发生了什么?另外,我想问为什么listView中的项目位于不准确的位置?对于第二项而言,它似乎更常见。如何正确调整?
下图是NotificationView.java的布局:
NotificationView.java
public class NotificationView extends ListActivity{
String[] people;
ListView lv;
Button btn1,btn2;
public void onCreate(Bundle savedInstanceState){
super.onCreate(savedInstanceState);
setContentView(R.layout.view);
NotificationManager mnotis =(NotificationManager)getSystemService(NOTIFICATION_SERVICE);
mnotis.cancel(getIntent().getExtras().getInt("notificationID"));
String i = getIntent().getExtras().getString("name");
people = i.split("[,]");
Log.d("how",i);
lv= (ListView) findViewById(android.R.id.list);
btn1 = (Button)findViewById(R.id.acceptbtn);
btn2 = (Button)findViewById(R.id.closebtn);
ArrayAdapter<String> list = new ArrayAdapter<String>(NotificationView.this,R.layout.friendlist_item, R.id.friend_name,people);
lv.setAdapter(list);
btn1.setOnClickListener(new View.OnClickListener()
{
public void onClick(View v)
{
lv = getListView();
int i = lv.getCount();
Log.d("count",String.valueOf(i));
runOnUiThread(new Runnable(){
public void run(){
String itemSelected = "Selected items: \n";
for(int i=0;i<lv.getCount();i++){
if(lv.isItemChecked(i)){
itemSelected += lv.getItemAtPosition(i) + "\n";
}
}
Toast.makeText(NotificationView.this,itemSelected,Toast.LENGTH_SHORT).show();
}
});
}
});
}}
view.xml用
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:background="#ffffff"
>
<ListView android:id="@android:id/list"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1">
</ListView>
<FrameLayout android:id="@+id/FrameLayout01"
android:layout_width="fill_parent"
android:layout_height="wrap_content">
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="fill_parent"
android:background="#ffffff"
android:orientation="horizontal" >
<Button
android:id="@+id/acceptbtn"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
android:layout_weight="0.46"
android:text="Accept" />
<Button
android:id="@+id/closebtn"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="0.49"
android:text="Close" />
</LinearLayout>
</FrameLayout>
friendlist_item.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >
<CheckBox android:id="@+id/friend_name"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:paddingRight = "88dip"
android:textSize="20dip"
android:textStyle="bold"/>
</LinearLayout>
答案 0 :(得分:1)
您的复选框与您调用的方法无关,对于包含多项选项的列表视图,请参阅下一个指南:http://dj-android.blogspot.com/2012/04/milti-selection-listview-android-with.html