Android之使用PackageManager取得程序的包名、图标等

图：

Model代码：

public class AppInfo {
  
    private String appLabel;    
    private Drawable appIcon ;  
    private Intent intent ;     
    private String pkgName ;    
    
    public AppInfo(){}
    
    public String getAppLabel() {
        return appLabel;
    }
    public void setAppLabel(String appName) {
        this.appLabel = appName;
    }
    public Drawable getAppIcon() {
        return appIcon;
    }
    public void setAppIcon(Drawable appIcon) {
        this.appIcon = appIcon;
    }
    public Intent getIntent() {
        return intent;
    }
    public void setIntent(Intent intent) {
        this.intent = intent;
    }
    public String getPkgName(){
        return pkgName ;
    }
    public void setPkgName(String pkgName){
        this.pkgName=pkgName ;
    }

} 

继承BaseAdapter： 

public class BrowseApplicationInfoAdapter extends BaseAdapter {
    
    private List<AppInfo> mlistAppInfo = null;
    
    LayoutInflater infater = null;
    
    public BrowseApplicationInfoAdapter(Context context,  List<AppInfo> apps) {
        infater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
        mlistAppInfo = apps ;
    }
    @Override
    public int getCount() {
        // TODO Auto-generated method stub
        System.out.println("size" + mlistAppInfo.size());
        return mlistAppInfo.size();
    }
    @Override
    public Object getItem(int position) {
        // TODO Auto-generated method stub
        return mlistAppInfo.get(position);
    }
    @Override
    public long getItemId(int position) {
        // TODO Auto-generated method stub
        return 0;
    }
    @Override
    public View getView(int position, View convertview, ViewGroup arg2) {
        System.out.println("getView at " + position);
        View view = null;
        ViewHolder holder = null;
        if (convertview == null || convertview.getTag() == null) {
            view = infater.inflate(R.layout.browse_app_item, null);
            holder = new ViewHolder(view);
            view.setTag(holder);
        } 
        else{
            view = convertview ;
            holder = (ViewHolder) convertview.getTag() ;
        }
        AppInfo appInfo = (AppInfo) getItem(position);
        holder.appIcon.setImageDrawable(appInfo.getAppIcon());
        holder.tvAppLabel.setText(appInfo.getAppLabel());
        holder.tvPkgName.setText(appInfo.getPkgName());
        return view;
    }

    class ViewHolder {
        ImageView appIcon;
        TextView tvAppLabel;
        TextView tvPkgName;

        public ViewHolder(View view) {
            this.appIcon = (ImageView) view.findViewById(R.id.imgApp);
            this.tvAppLabel = (TextView) view.findViewById(R.id.tvAppLabel);
            this.tvPkgName = (TextView) view.findViewById(R.id.tvPkgName);
        }
    }
}

MainActivity：

public class MainActivity extends Activity implements OnItemClickListener {

    private ListView listview = null;

    private List<AppInfo> mlistAppInfo = null;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.browse_app_list);

        listview = (ListView) findViewById(R.id.listviewApp);
        mlistAppInfo = new ArrayList<AppInfo>();
        queryAppInfo(); // 查询所有应用程序信息
        BrowseApplicationInfoAdapter browseAppAdapter = new BrowseApplicationInfoAdapter(
                this, mlistAppInfo);
        listview.setAdapter(browseAppAdapter);
        listview.setOnItemClickListener(this);
    }
    // 点击跳转至该应用程序
    public void onItemClick(AdapterView<?> arg0, View view, int position,
            long arg3) {
        // TODO Auto-generated method stub
        Intent intent = mlistAppInfo.get(position).getIntent();
        startActivity(intent);
    }
    // 获得所有启动Activity的信息，类似于Launch界面
    public void queryAppInfo() {
        PackageManager pm = this.getPackageManager(); //获得PackageManager对象
        Intent mainIntent = new Intent(Intent.ACTION_MAIN, null);
        mainIntent.addCategory(Intent.CATEGORY_LAUNCHER);
        // 通过查询，获得所有ResolveInfo对象.
        List<ResolveInfo> resolveInfos = pm
                .queryIntentActivities(mainIntent, PackageManager.MATCH_DEFAULT_ONLY);
        // 调用系统排序 ， 根据name排序
        // 该排序很重要，否则只能显示系统应用，而不能列出第三方应用程序
        Collections.sort(resolveInfos,new ResolveInfo.DisplayNameComparator(pm));
        if (mlistAppInfo != null) {
            mlistAppInfo.clear();
            for (ResolveInfo reInfo : resolveInfos) {
                String activityName = reInfo.activityInfo.name; // 获得该应用程序的启动Activity的name
                String pkgName = reInfo.activityInfo.packageName; // 获得应用程序的包名
                String appLabel = (String) reInfo.loadLabel(pm); // 获得应用程序的Label
                Drawable icon = reInfo.loadIcon(pm); // 获得应用程序图标
                // 为应用程序的启动Activity 准备Intent
                Intent launchIntent = new Intent();
                launchIntent.setComponent(new ComponentName(pkgName,
                        activityName));
                // 创建一个AppInfo对象，并赋值
                AppInfo appInfo = new AppInfo();
                appInfo.setAppLabel(appLabel);
                appInfo.setPkgName(pkgName);
                appInfo.setAppIcon(icon);
                appInfo.setIntent(launchIntent);
                mlistAppInfo.add(appInfo); // 添加至列表中
            }
        }
    }

}  

AndroidManifest文件：

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.qin.appinfo" android:versionCode="1" android:versionName="1.0">
    <application android:icon="@drawable/icon" android:label="@string/app_name">
        <activity android:name=".MainActivity" android:label="@string/app_name">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />
                <category android:name="android.intent.category.LAUNCHER" />
                <category android:name="android.intent.category.DEFAULT" />
            </intent-filter>
        </activity>
    </application>

</manifest>   

browse_app_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="50dip">

    <ImageView android:id="@+id/imgApp" android:layout_width="wrap_content"
        android:layout_height="fill_parent" ></ImageView>
    <RelativeLayout android:layout_width="fill_parent"  android:layout_marginLeft="10dip"
        android:layout_height="40dip">
        <TextView android:id="@+id/tvLabel" android:layout_width="wrap_content"
            android:layout_height="wrap_content" android:text="AppLable : "></TextView>
        <TextView android:id="@+id/tvAppLabel" android:layout_width="wrap_content"
            android:layout_toRightOf="@id/tvLabel" android:layout_height="wrap_content"
            android:layout_marginLeft="3dip" android:text="Label" android:textColor="#FFD700"></TextView>
        <TextView android:id="@+id/tvName" android:layout_width="wrap_content"
            android:layout_height="wrap_content" android:layout_below="@id/tvLabel" 
            android:text="包名:"></TextView>
        <TextView android:id="@+id/tvPkgName" android:layout_width="wrap_content"
            android:layout_height="wrap_content" android:layout_below="@id/tvAppLabel"
            android:layout_alignLeft="@id/tvAppLabel" android:textColor="#FFD700"></TextView>
    </RelativeLayout>
</LinearLayout>

broswe_app_list.xml:

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical" android:layout_width="fill_parent"
    android:layout_height="fill_parent">>
    <ListView android:id="@+id/listviewApp" android:layout_width="fill_parent"
        android:layout_height="fill_parent" ></ListView>

</LinearLayout>