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:

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启动程序，获取程序信息：

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代码例如以下：

创建一个AppInfo类来表示应用程序

<pre name="code" class="java">public class AppInfo {
public CharSequence title;// 程序名
public CharSequence packageName; // 程序包名
Intent intent;// 启动Intent
public Drawable icon;// 程序图标/*
 * 设置启动该程序的Intent
 */
final void setActivity(ComponentName className, int launchFlags) {
intent = new Intent(Intent.ACTION_MAIN);
intent.addCategory(Intent.CATEGORY_LAUNCHER);
intent.setComponent(className);
intent.setFlags(launchFlags);
}}

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:

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

app_list_item.xml:

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="horizontal" android:layout_width="fill_parent"
android:layout_height="wrap_content" android:gravity="center_vertical"><ImageView
android:id="@+id/lv_icon"
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:id="@+id/lv_item_appname"
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:id="@+id/lv_item_packageame"
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("\n");
}
tv_appname.setText(appname);
tv_appversion.setText(appversion);
tv_packagename.setText(packagename);
tv_permission.setText(sb.toString());
}
}

app_detial.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"
    >
    <TableLayout
        android:id="@+id/app_table"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content">
        <TableRow
              android:id="@+id/tableRow1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
            >
            <TextView
                android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="程序名字"
    />
    <TextView
        android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:id="@+id/detail_app_name"
    />
        </TableRow>        <TableRow
        android:id="@+id/tableRow2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content">
     <TextView
         android:layout_width="wrap_content"
     android:layout_height="wrap_content"
     android:text="程序版本号"
    />
    <TextView
        android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:id="@+id/detail_app_version"
    />
    </TableRow>
         <TableRow
         android:id="@+id/tableRow3"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content">
     <TextView
         android:layout_width="wrap_content"
     android:layout_height="wrap_content"
     android:text="程序包名"
    />
    <TextView
        android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:id="@+id/detail_app_packname"
    />
    </TableRow>
     <TableRow
         android:id="@+id/tableRow4"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content">
             <TextView
                 android:layout_width="wrap_content"
     android:layout_height="wrap_content"
     android:text="程序权限"
    />
    <TextView
        android:layout_width="wrap_content"
    android:layout_height="wrap_content"
        android:id="@+id/detail_app_permissions"
    />
         </TableRow>
    </TableLayout></LinearLayout>

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_

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