0
ListViewが正確ではないので、複数の選択肢を作成することはできません。どのように問題を解決できるか教えてください。ありがとう！仕事のインストール済みのアンドロイドアプリケーションのリストに「複数の選択肢」をアイコンで追加するには？
例：enter image description here
私はこの結果必要があります。enter image description here
ああ...私はさまざまな方法で問題を解決しようとしたが、私は成功しませんでした。あなたのうちの一人が私に助言を与えることを願っています:)ありがとう！
活性：（MyExample.java）
package com.example.diplom.tester;
import android.app.ListActivity;
import android.app.ProgressDialog;
import android.content.pm.ApplicationInfo;
import android.content.pm.PackageManager;
import android.os.AsyncTask;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.ListView;
import java.util.ArrayList;
import java.util.List;
public class MyExample extends ListActivity {
private PackageManager packageManager = null;
private List<ApplicationInfo> applist = null;
private AddAdapter listadapter = null;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_my_example);
packageManager = getPackageManager();
new LoadApplications().execute();
}
@Override
protected void onListItemClick(ListView l, View v, int position, long id) {
super.onListItemClick(l, v, position, id);
}
private List<ApplicationInfo> checkForLaunchIntent(List<ApplicationInfo> list){
ArrayList<ApplicationInfo> appList = new ArrayList<ApplicationInfo>();
for(ApplicationInfo info : list){
try{
if(packageManager.getLaunchIntentForPackage(info.packageName) != null){
appList.add(info);
}
}catch (Exception e){
e.printStackTrace();
}
}
return appList;
}
private class LoadApplications extends AsyncTask<Void,Void,Void> {
private ProgressDialog progress = null;
@Override
protected Void doInBackground(Void... voids) {
applist = checkForLaunchIntent(packageManager.getInstalledApplications(PackageManager.GET_META_DATA));
listadapter = new AddAdapter(MyExample.this,R.layout.list_item,applist);
return null;
}
@Override
protected void onPostExecute(Void aVoid) {
setListAdapter(listadapter);
progress.dismiss();
super.onPostExecute(aVoid);
}
@Override
protected void onPreExecute() {
progress = ProgressDialog.show(MyExample.this,null,"Loading...");
super.onPreExecute();
}
}
}
AddAdapter.java
package com.example.diplom.tester;
import android.content.Context;
import android.content.pm.ApplicationInfo;
import android.content.pm.PackageManager;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.ImageView;
import android.widget.Switch;
import android.widget.TextView;
import java.util.List;
/**
* Created by 1 on 22.03.2017.
*/
public class AddAdapter extends ArrayAdapter<ApplicationInfo> {
private List<ApplicationInfo> appList = null;
private Context context;
private PackageManager packageManager;
public AddAdapter(Context context, int resource, List<ApplicationInfo> objects) {
super(context, resource, objects);
this.context = context;
this.appList = objects;
packageManager = context.getPackageManager();
}
@Override
public int getCount() {
return ((null!=appList)? appList.size() : 0);
}
@Override
public ApplicationInfo getItem(int position) {
return ((null!=appList)? appList.get(position) : null);
}
@Override
public long getItemId(int position) {
return position;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
View view = convertView;
if(null==view){
LayoutInflater layoutInflater = (LayoutInflater) context.getSystemService(context.LAYOUT_INFLATER_SERVICE);
view = layoutInflater.inflate(R.layout.list_item,null);
}
ApplicationInfo data = appList.get(position);
if(null!=data){
TextView appName = (TextView) view.findViewById(R.id.app_name);
ImageView iconView = (ImageView) view.findViewById(R.id.app_icon);
appName.setText(data.loadLabel(packageManager));
iconView.setImageDrawable(data.loadIcon(packageManager));
}
return view;
}
}
listItem.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="wrap_content"
android:orientation="horizontal">
<ImageView
android:id="@+id/app_icon"
android:layout_width="50dp"
android:layout_height="50dp"
android:padding="3dp"
android:scaleType="centerCrop"
android:contentDescription="@null"/>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:gravity="center_vertical"
android:orientation="vertical"
android:padding="5dp">
<TextView
android:id="@+id/app_name"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center_vertical"
android:textStyle="bold"/>
</LinearLayout>
</LinearLayout>
activity_my_example.xml：
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout 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:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
tools:context="com.example.diplom.tester.MyExample">
<ListView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="@android:id/list"
>
</ListView>
</RelativeLayout>