Java 如何创建与每个已安装的android应用程序（在用户的手机上）关联的活动（android类）列表（文件名、位置）？

到目前为止，我已经编写了一个应用程序，它可以获得用户手机上所有已安装android应用程序（名称和图标）的列表

但我也希望创建一个与每个已安装的android应用程序（文件名、位置和地址）相关联的所有相关活动/android类（在用户手机上）的列表

我怎样才能做到这一点

迄今为止的代码：

MainActivity.java

public class MainActivity extends ListActivity {
    private PackageManager packageManager = null;
    private List<ApplicationInfo> applist = null;
    private ApplicationAdapter listadaptor = null;

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

        packageManager = getPackageManager();

        new LoadApplications().execute();
    }

    public boolean onCreateOptionsMenu(Menu menu) {
        MenuInflater inflater = getMenuInflater();
        inflater.inflate(R.menu.menu, menu);

        return true;
    }

    public boolean onOptionsItemSelected(MenuItem item) {
        return false;
    }


    @Override
    protected void onListItemClick(ListView l, View v, int position, long id) {
        super.onListItemClick(l, v, position, id);

        ApplicationInfo app = applist.get(position);
        try {
            Intent intent = packageManager
                    .getLaunchIntentForPackage(app.packageName);

            if (null != intent) {
                startActivity(intent);
            }
        } catch (ActivityNotFoundException e) {
            Toast.makeText(MainActivity.this, e.getMessage(),
                    Toast.LENGTH_LONG).show();
        } catch (Exception e) {
            Toast.makeText(MainActivity.this, e.getMessage(),
                    Toast.LENGTH_LONG).show();
        }
    }

    private List<ApplicationInfo> checkForLaunchIntent(List<ApplicationInfo> list) {
        ArrayList<ApplicationInfo> applist = new ArrayList<ApplicationInfo>();
        for (ApplicationInfo info : list) {
            try {
                if (null != packageManager.getLaunchIntentForPackage(info.packageName)) {
                    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... params) {
            applist = checkForLaunchIntent(packageManager.getInstalledApplications(PackageManager.GET_META_DATA));
            listadaptor = new ApplicationAdapter(MainActivity.this,
                    R.layout.snippet_list_row, applist);

            return null;
        }

        @Override
        protected void onCancelled() {
            super.onCancelled();
        }

        @Override
        protected void onPostExecute(Void result) {
            setListAdapter(listadaptor);
            progress.dismiss();
            super.onPostExecute(result);
        }

        @Override
        protected void onPreExecute() {
            progress = ProgressDialog.show(MainActivity.this, null,
                    "Loading application info...");
            super.onPreExecute();
        }

        @Override
        protected void onProgressUpdate(Void... values) {
            super.onProgressUpdate(values);
        }
    }

public class ApplicationAdapter extends ArrayAdapter<ApplicationInfo> {
    private List<ApplicationInfo> appsList = null;
    private Context context;
    private PackageManager packageManager;

    public ApplicationAdapter(Context context, int textViewResourceId,
            List<ApplicationInfo> appsList) {
        super(context, textViewResourceId, appsList);
        this.context = context;
        this.appsList = appsList;
        packageManager = context.getPackageManager();
    }

    @Override
    public int getCount() {
        return ((null != appsList) ? appsList.size() : 0);
    }

    @Override
    public ApplicationInfo getItem(int position) {
        return ((null != appsList) ? appsList.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.snippet_list_row, null);
        }

        ApplicationInfo data = appsList.get(position);
        if (null != data) {
            TextView appName = (TextView) view.findViewById(R.id.app_name);
            TextView packageName = (TextView) view.findViewById(R.id.app_paackage);
            ImageView iconview = (ImageView) view.findViewById(R.id.app_icon);
            appName.setText(data.loadLabel(packageManager));
            packageName.setText(data.packageName);
            iconview.setImageDrawable(data.loadIcon(packageManager));
        }
        return view;
    }
};

public类MainActivity扩展了ListActivity{
私有PackageManager PackageManager=null；
私有列表applist=null；
私有应用程序适配器ListAdapter=null；
@凌驾
创建时的公共void（Bundle savedInstanceState）{
super.onCreate（savedInstanceState）；
setContentView（R.layout.activity_main）；
packageManager=getPackageManager（）；
新建LoadApplications（）.execute（）；
}
公共布尔onCreateOptions菜单（菜单）{
MenuInflater充气机=getMenuInflater（）；
充气机。充气（右菜单，菜单）；
返回true；
}
公共布尔值onOptionsItemSelected（菜单项项）{
返回false；
}
@凌驾
受保护的void onListItemClick（列表视图l、视图v、整数位置、长id）{
super.onListItemClick（左、右、位置、id）；
ApplicationInfo-app=applist.get（位置）；
试一试{
Intent=packageManager
.getLaunchIntentForPackage（app.packageName）；
if（null！=intent）{
星触觉（意向）；
}
}捕获（ActivityNotFounde异常）{
Toast.makeText（MainActivity.this，e.getMessage（），
Toast.LENGTH_LONG）.show（）；
}捕获（例外e）{
Toast.makeText（MainActivity.this，e.getMessage（），
Toast.LENGTH_LONG）.show（）；
}
}
私人列表checkForLaunchIntent（列表列表）{
ArrayList applist=新的ArrayList（）；
用于（应用程序信息：列表）{
试一试{
if（null！=packageManager.getLaunchIntentForPackage（info.packageName））{
添加（信息）；
}
}捕获（例外e）{
e、 printStackTrace（）；
}
}
返回应用程序列表；
}
私有类装入应用程序扩展异步任务{
private ProgressDialog progress=null；
@凌驾
受保护的Void doInBackground（Void…参数）{
applist=checkForLaunchIntent（packageManager.getInstalledApplications（packageManager.GET_META_DATA））；
ListAdapter=新应用程序适配器（MainActivity.this，
R.layout.snippet\u list\u行，applist）；
返回null；
}
@凌驾
受保护的void onCancelled（）{
super.onCancelled（）；
}
@凌驾
受保护的void onPostExecute（void结果）{
setListAdapter（ListAdapter）；
进步。解散（）；
super.onPostExecute（结果）；
}
@凌驾
受保护的void onPreExecute（）{
progress=ProgressDialog.show（MainActivity.this，null，
“正在加载应用程序信息…”）；
super.onPreExecute（）；
}
@凌驾
受保护的void onProgressUpdate（void…值）{
super.onProgressUpdate（值）；
}
}

ApplicationAdapter.java

public class MainActivity extends ListActivity {
    private PackageManager packageManager = null;
    private List<ApplicationInfo> applist = null;
    private ApplicationAdapter listadaptor = null;

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

        packageManager = getPackageManager();

        new LoadApplications().execute();
    }

    public boolean onCreateOptionsMenu(Menu menu) {
        MenuInflater inflater = getMenuInflater();
        inflater.inflate(R.menu.menu, menu);

        return true;
    }

    public boolean onOptionsItemSelected(MenuItem item) {
        return false;
    }


    @Override
    protected void onListItemClick(ListView l, View v, int position, long id) {
        super.onListItemClick(l, v, position, id);

        ApplicationInfo app = applist.get(position);
        try {
            Intent intent = packageManager
                    .getLaunchIntentForPackage(app.packageName);

            if (null != intent) {
                startActivity(intent);
            }
        } catch (ActivityNotFoundException e) {
            Toast.makeText(MainActivity.this, e.getMessage(),
                    Toast.LENGTH_LONG).show();
        } catch (Exception e) {
            Toast.makeText(MainActivity.this, e.getMessage(),
                    Toast.LENGTH_LONG).show();
        }
    }

    private List<ApplicationInfo> checkForLaunchIntent(List<ApplicationInfo> list) {
        ArrayList<ApplicationInfo> applist = new ArrayList<ApplicationInfo>();
        for (ApplicationInfo info : list) {
            try {
                if (null != packageManager.getLaunchIntentForPackage(info.packageName)) {
                    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... params) {
            applist = checkForLaunchIntent(packageManager.getInstalledApplications(PackageManager.GET_META_DATA));
            listadaptor = new ApplicationAdapter(MainActivity.this,
                    R.layout.snippet_list_row, applist);

            return null;
        }

        @Override
        protected void onCancelled() {
            super.onCancelled();
        }

        @Override
        protected void onPostExecute(Void result) {
            setListAdapter(listadaptor);
            progress.dismiss();
            super.onPostExecute(result);
        }

        @Override
        protected void onPreExecute() {
            progress = ProgressDialog.show(MainActivity.this, null,
                    "Loading application info...");
            super.onPreExecute();
        }

        @Override
        protected void onProgressUpdate(Void... values) {
            super.onProgressUpdate(values);
        }
    }

public class ApplicationAdapter extends ArrayAdapter<ApplicationInfo> {
    private List<ApplicationInfo> appsList = null;
    private Context context;
    private PackageManager packageManager;

    public ApplicationAdapter(Context context, int textViewResourceId,
            List<ApplicationInfo> appsList) {
        super(context, textViewResourceId, appsList);
        this.context = context;
        this.appsList = appsList;
        packageManager = context.getPackageManager();
    }

    @Override
    public int getCount() {
        return ((null != appsList) ? appsList.size() : 0);
    }

    @Override
    public ApplicationInfo getItem(int position) {
        return ((null != appsList) ? appsList.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.snippet_list_row, null);
        }

        ApplicationInfo data = appsList.get(position);
        if (null != data) {
            TextView appName = (TextView) view.findViewById(R.id.app_name);
            TextView packageName = (TextView) view.findViewById(R.id.app_paackage);
            ImageView iconview = (ImageView) view.findViewById(R.id.app_icon);
            appName.setText(data.loadLabel(packageManager));
            packageName.setText(data.packageName);
            iconview.setImageDrawable(data.loadIcon(packageManager));
        }
        return view;
    }
};

公共类应用程序适配器扩展了ArrayAdapter{
私有列表appsList=null；
私人语境；
专用软件包管理器软件包管理器；
公共应用程序适配器（上下文，int textViewResourceId，
列表（应用列表）{
超级（上下文、textViewResourceId、appsList）；
this.context=上下文；
this.appsList=appsList；
packageManager=context.getPackageManager（）；
}
@凌驾
public int getCount（）{
返回（（null！=appsList）→appsList.size（）：0）；
}
@凌驾
公共应用程序信息获取项（int位置）{
return（（null！=appsList）→appsList.get（position）：null）；
}
@凌驾
公共长getItemId（int位置）{
返回位置；
}
@凌驾
公共视图getView（int位置、视图转换视图、视图组父视图）{
视图=转换视图；
if（null==视图）{
LayoutInflater LayoutInflater=（LayoutInflater）上下文
.getSystemService（上下文布局\充气机\服务）；
view=LayoutFlater.inflate（R.layout.snippet\u list\u行，空）；
}
ApplicationInfo data=appsList.get（位置）；
if（null！=数据）{
TextView appName=（TextView）view.findViewById（R.id.app_name）；
TextView packageName=（TextView）view.findViewById（R.id.app\u papackage）；
ImageView图标视图=（ImageView）view.findViewById（R.id.app_图标）；
appName.setText（data.loadLabel（packageManager））；
packageName.setText（data.packageName）；
iconview.setImageDrawable（data.loadIcon（packageManager））；
}
返回视图；
}
};

我假设，只有当第三方应用程序的活动将其“android:exported”属性设置为true时，您才能实现计划的目标。默认情况下，所有活动的“android:exported”设置为false