Android之使用PackageManager取得程序的包名、图标等

叁歲伎倆 2023-10-16 18:45 16阅读 0赞

图：

Model代码：

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

继承BaseAdapter：

publicclass 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  
publicint 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  
publiclong 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：

publicclass MainActivity extends Activity implements OnItemClickListener \{  
  
private ListView listview = null;  
  
private List<AppInfo> mlistAppInfo = null;  
  
@Override  
publicvoid 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  
publicvoid 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  
publicvoid 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>