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我正在開發一個應用程序，我想在ListView中顯示所有已安裝的應用程序。
我成功地這樣做了。我的ListView中的每個項目都包含一個應用程序名稱和一個CheckBox。我希望每當用戶按下按鈕時，CheckBox的所有應用程序名稱都是IsSelected（）應該存儲在單獨的ArrayList中。如何添加選擇CheckBox以分離ArrayList的ListView項目？
我已經嘗試了很多東西，但沒有任何工作。
我的代碼是：
main_activity.xml：
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:id="@+id/container"
android:layout_height="match_parent"
tools:context="com.example.pc.fkidshell.Teen5Activity">
<ListView
android:id="@+id/list"
android:layout_height="wrap_content"
android:layout_width="fill_parent"
android:layout_weight="1"/>
<Button
android:id="@+id/btn_add2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:layout_centerVertical="true"
android:layout_marginBottom="20dp"
android:text="Add Selected Apps"
android:width="170dp"
android:layout_weight="2"
android:layout_alignParentBottom="true"
android:layout_gravity="center_horizontal" />
</FrameLayout>
inflator.xml：
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="60dp"
android:gravity="center"
android:layout_gravity="center"
android:orientation="horizontal"
android:weightSum="2" >
<TextView
android:id="@+id/a"
android:layout_width="0dp"
android:layout_height="fill_parent"
android:textColor="#000"
android:layout_gravity="center"
android:gravity="center"
android:layout_weight="1.7" />
<CheckBox
android:id="@+id/b"
android:layout_width="0dp"
android:layout_gravity="center"
android:gravity="center"
android:layout_weight="0.3"
android:layout_height="wrap_content" />
</LinearLayout>
Datamodel.java
public class Datamodel {
public String appname = "";
private boolean selected;
public String getAppname() {
return appname;
}
public void setAppname(String appname) {
this.appname = appname;
}
public boolean isSelected() {
return selected;
}
public void setSelected(boolean isChecked) {
this.selected = isChecked;
}
}
Adapter.java：（在複選框監聽器我正在使用「MyApplication.setMyapps（ss）;」來分配應用程序nam E要我的全局類（MyApplication的）可變的ArrayList安裝MyApps）
public class Adapter extends BaseAdapter {
Context _ctx;
LayoutInflater inflater;
public ArrayList<Datamodel> data;
public Adapter(Context c, ArrayList<Datamodel> _arraylist) {
this._ctx = c;
this.data = _arraylist;
}
@Override
public int getCount() {
return data.size();
}
@Override
public Object getItem(int position) {
return position;
}
@Override
public long getItemId(int position) {
return 0;
}
@Override
public View getView(final int position, View convertView, ViewGroup parent)
{
inflater = (LayoutInflater) _ctx.getApplicationContext().getSystemService(Context.LAYOUT_INFLATER_SERVICE);
View itemView = inflater.inflate(R.layout.inflator, parent, false);
final CheckBox checks = (CheckBox) itemView.findViewById(R.id.b);
final TextView _setappname = (TextView) itemView.findViewById(R.id.a);
checks.setChecked(data.get(position).isSelected());
Datamodel obj = data.get(position);
_setappname.setText(obj.getAppname());
checks.setTag(position);
checks.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener()
{
@Override
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked)
{
int getPosition = (Integer) buttonView.getTag();
Datamodel _obj = data.get(getPosition);
data.get(position).setSelected(isChecked);
String ss = _obj.getAppname();
System.out.println("pos is" + getPosition);
MyApplication.setMyapps(ss);
}
});
return itemView;
}
}
Mainactivity.java：
public class Teen5Activity extends Activity
{
private ListView list;
ArrayList<Datamodel> res;
Adapter _adapter;
@Override
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_teen5);
list = (ListView) findViewById(R.id.list);
List<PackageInfo> _myapps = getPackageManager().getInstalledPackages(0); //all the list of apps pacakage info stores in _myapps
res = new ArrayList<Datamodel>(); //new arraylist that contains appname and checkboxes status
for (int i = 0; i < _myapps.size(); i++)
{
PackageInfo p = _myapps.get(i);
Datamodel _model = new Datamodel();
_model.setAppname(p.applicationInfo.loadLabel(getPackageManager()).toString());
res.add(_model);
System.out.println("ajajajja" + res.size() + res.get(i).getAppname());
}
_adapter = new Adapter(getApplicationContext(), res);
_adapter.notifyDataSetChanged();
list.setAdapter(_adapter);
Button addbtn=(Button) findViewById(R.id.btn_add2);
addbtn.setOnClickListener(new View.OnClickListener()
{
@Override
public void onClick(View v)
{
if((MyApplication.getMyapps())==null)
{
Toast.makeText(getApplicationContext(), "Nothing to ADD!", Toast.LENGTH_LONG).show();
}
else
{
Toast.makeText(getApplicationContext(), "Successfully Added your Apps!", Toast.LENGTH_LONG).show();
}
}
});
}
}
MyApplication.java：
public class MyApplication extends Application
{
private static ArrayList<String> myapps=null;
public static void setMyapps(String logo)
{
myapps.add(logo);
}
public static ArrayList<String> getMyapps()
{
return myapps;
}
}
謝謝..它的工作 – Iqra
很高興幫助你:) – SoulRayder