一起学android之怎样获取手机程序列表以及程序相关信息并启动指定程序（26）

效果图：
程序列表:
启动程序，获取程序信息：
一起学android之怎样获取手机程序列表以及程序相关信息并启动指定程序（26）
代码例如以下：
创建一个AppInfo类来表示应用程序





创建程序列表的适配器：

/**
 * 程序列表适配器
 * @author bill
 *
 */
public class ShowAppListAdapter extends BaseAdapter {
	private ArrayList<AppInfo> appList;
	private LayoutInflater inflater;
	
	public ShowAppListAdapter(Context context,ArrayList<AppInfo> appList,
			PackageManager pm) {
		this.appList = appList;
		inflater = LayoutInflater.from(context);
	}

	public int getCount() {
		return appList.size();
	}


	public Object getItem(int position) {
		return appList.get(position);
	}


	public long getItemId(int position) {
		return position;
	}


	public View getView(int position, View convertView, ViewGroup parent) {
		final AppInfo info = appList.get(position);
		ViewHolder holder = null;
		if(null == convertView){
			convertView = inflater.inflate(R.layout.app_list_item, null);
			holder = new ViewHolder();
			holder.lv_image = (ImageView) convertView.findViewById(R.id.lv_icon);
			holder.lv_name = (TextView) convertView.findViewById(R.id.lv_item_appname);
			holder.lv_packname = (TextView) convertView.findViewById(R.id.lv_item_packageame);
			convertView.setTag(holder);
		}
		else {
			holder = (ViewHolder) convertView.getTag();
		}
		holder.lv_image.setImageDrawable(info.icon);
		final CharSequence name = info.title;
		final CharSequence packName = info.packageName;
		holder.lv_name.setText(name);
		holder.lv_packname.setText(packName);
		return convertView;
	}
	private final static  class ViewHolder{
		ImageView lv_image;
		 TextView lv_name;
		 TextView lv_packname;
	}

	
}








public class MainActivity extends Activity {
	/*
	 * 应用程序集合
	 */
	private ArrayList<AppInfo> appInfos;
	private ListView lv_app;
	/*
	 * 管理应用程序包，并通过它获取程序信息
	 */
	private PackageManager pm;
	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.app_list);
		pm = getPackageManager();
		initView();
		new Thread(runable).start();
	}

	private void initView(){
		lv_app = (ListView) findViewById(R.id.app_list_view);
		lv_app.setOnItemClickListener(new AppDetailLinster());
	}

	
	private final Runnable runable = new Runnable() {

		public void run() {
			loadApplications();
			myHandler.obtainMessage().sendToTarget();
		}

	};

	private Handler myHandler = new Handler() {

		@Override
		public void handleMessage(Message msg) {
			lv_app.setAdapter(new ShowAppListAdapter(MainActivity.this,
					appInfos, pm));
			
			
		}

	};
	
	/**
	 * 载入应用列表
	 */
	private void loadApplications() {
		PackageManager manager = this.getPackageManager();
		Intent mainIntent = new Intent(Intent.ACTION_MAIN, null);
		mainIntent.addCategory(Intent.CATEGORY_LAUNCHER);
		final List<ResolveInfo> apps = manager.queryIntentActivities(
				mainIntent, 0);
		Collections.sort(apps, new ResolveInfo.DisplayNameComparator(manager));
		if (apps != null) {
			final int count = apps.size();
			if (appInfos == null) {
				appInfos = new ArrayList<AppInfo>(count);
			}
			appInfos.clear();
			for (int i = 0; i < count; i++) {
				AppInfo application = new AppInfo();
				ResolveInfo info = apps.get(i);
				application.title = info.loadLabel(manager);
				application.setActivity(new ComponentName(
						info.activityInfo.applicationInfo.packageName,
						info.activityInfo.name), Intent.FLAG_ACTIVITY_NEW_TASK
						| Intent.FLAG_ACTIVITY_RESET_TASK_IF_NEEDED);
				application.icon = info.activityInfo.loadIcon(manager);
				application.packageName = info.activityInfo.applicationInfo.packageName;
				appInfos.add(application);
			}
		}
	}
	
	
	/**
	 * 列表监听类
	 * @author bill
	 *
	 */
	public final class AppDetailLinster implements OnItemClickListener {

		AlertDialog dialog;

		public void onItemClick(AdapterView<?> view, View arg1,
				final int position, long arg3) {
			AlertDialog.Builder builder = new AlertDialog.Builder(
					MainActivity.this);
			builder.setTitle("选项");
			builder.setItems(R.array.choice, new OnClickListener() {
				public void onClick(DialogInterface dialog, int which) {
					final AppInfo appInfo = appInfos.get(position);
					switch (which) {
					case 0: // 启动程序
						try {
							startApp(appInfo);
						} catch (Exception e) {
							
						}
						break;
					case 1: // 具体信息
						try {
							showAppDetail(appInfo);
						} catch (Exception e) {
							
						}
						break;
				
					}
					dialog.dismiss();
				}

				private void showAppDetail(AppInfo appInfo)
						throws Exception {
					final String packName = appInfo.packageName.toString();
					final PackageInfo packInfo = getAppPackinfo(packName);
					final String versionName = packInfo.versionName;
					final String[] apppremissions = packInfo.requestedPermissions;
					final String appName = appInfo.title.toString();
					Intent showDetailIntent = new Intent(MainActivity.this,
							ShowAppDetailActivity.class);
					Bundle bundle = new Bundle();
					bundle.putString("packagename", packName);
					bundle.putString("appversion", versionName);
					bundle.putStringArray("apppremissions", apppremissions);
					bundle.putString("appname", appName);
					showDetailIntent.putExtras(bundle);
					startActivity(showDetailIntent);

				}

				private void startApp(AppInfo appInfo)
						throws Exception {
					final String packName = appInfo.packageName.toString();
					final String activityName = getActivityName(packName);
					if (null == activityName) {
						Toast.makeText(MainActivity.this, "程序无法启动",
								Toast.LENGTH_SHORT);
						return;
					}
					Intent intent = new Intent();
					intent.setComponent(new ComponentName(packName,
							activityName));
					startActivity(intent);
				}

			});
			dialog = builder.create();
			dialog.show();

		}

	}
	/**
	 * 获取程序信息
	 * @param packName
	 * @return
	 * @throws Exception
	 */
	public PackageInfo getAppPackinfo(String packName) throws Exception {
		return pm.getPackageInfo(packName, PackageManager.GET_ACTIVITIES
				| PackageManager.GET_PERMISSIONS);
	}
	
	/**
	 * 获取启动相关程序的Activity
	 * @param packName
	 * @return
	 * @throws Exception
	 */
	public String getActivityName(String packName) throws Exception {
		final PackageInfo packInfo = pm.getPackageInfo(packName,
				PackageManager.GET_ACTIVITIES);
		final ActivityInfo[] activitys = packInfo.activities;
		if (null == activitys || activitys.length <= 0) {
			return null;
		}
		return activitys[0].name;
	}
}




app_list.xml:

>
<RelativeLayout xmlns:andro
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:orientation="vertical"
    android:background="@android:color/black" >



    <ListView
        android:
        android:layout_width="fill_parent"
        android:layout_height="fill_parent"
      >
    </ListView>

</RelativeLayout>





app_list_item.xml:

>
<LinearLayout xmlns:andro
	android:orientation="horizontal" android:layout_width="fill_parent"
	android:layout_height="wrap_content" android:gravity="center_vertical">
	
	<ImageView
		android:
		android:layout_width="48px"
		android:layout_height="48px"
		android:layout_marginTop="5px"
		android:layout_marginBottom="5px"
	></ImageView>
	<LinearLayout
		android:orientation="vertical"
		android:layout_width="wrap_content"
		android:layout_height="48px"
		android:paddingLeft="5px"
		>
		<TextView
			android:
			android:layout_width="fill_parent"
			android:layout_height="wrap_content"
			android:singleLine="true"
			android:textSize="16px"
			android:textStyle="bold"
			android:textColor="#fff"
		></TextView>
		
		<TextView
			android:
			android:layout_width="fill_parent"
			android:layout_height="wrap_content"
			android:singleLine="true"
			android:textColor="#fff"
		></TextView>
		
		
	</LinearLayout>
</LinearLayout>






/**
 * 查看应用信息
 * @author bill
 *
 */
public class ShowAppDetailActivity extends Activity {

	private TextView tv_appname;
	private TextView tv_appversion;
	private TextView tv_packagename;
	private TextView tv_permission;
	@Override
	protected void onCreate(Bundle savedInstanceState) {
		// TODO Auto-generated method stub
		super.onCreate(savedInstanceState);
		setContentView(R.layout.app_detial);
		tv_appname = (TextView) findViewById(R.id.detail_app_name);
		tv_appversion = (TextView) findViewById(R.id.detail_app_version);
		tv_packagename = (TextView) findViewById(R.id.detail_app_packname);
		tv_permission = (TextView) findViewById(R.id.detail_app_permissions);
		Bundle bundle = this.getIntent().getExtras();
		String packagename=  bundle.getString("packagename");
		String appversion = bundle.getString("appversion");
		String appname = bundle.getString("appname");
		String[] appPremissions = bundle.getStringArray("apppremissions");
		StringBuilder sb = new StringBuilder();
		for(String s : appPremissions){
			sb.append(s);
			sb.append("
");
		}
		tv_appname.setText(appname);
		tv_appversion.setText(appversion);
		tv_packagename.setText(packagename);
		tv_permission.setText(sb.toString());
	}
}



app_detial.xml:




最后别忘了配置AndroidManifest。





转载请注明出处：http://blog.csdn.net/hai_qing_xu_kong/article/details/44274387 情绪控_
一起学android之怎样获取手机程序列表以及程序相关信息并启动指定程序 （26）

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一起学android之怎样获取手机程序列表以及程序相关信息并启动指定程序（26）
