我如何加载应用程序名称，应用程序图像和包名到变量，我可以在一个单独的活动中使用

Question

我下载了这个示例应用程序，它显示了手机上的应用程序列表。我试图学习和学习的代码，但想添加到它允许你点击一个应用程序，然后烤应用程序的名称和包的位置。

来源

    public class AllAppsActivity 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();
    }
    @Override
    protected void onListItemClick(ListView l, View v, int position, long id) {
        super.onListItemClick(l, v, position, id);
            ApplicationInfo app = applist.get(position);
            Intent intent = packageManager.getLaunchIntentForPackage(app.packageName);
            if (null != intent) {
                startActivity(intent);
            } 
        Toast.makeText(AllAppsActivity.this, "You have selected ", Toast.LENGTH_SHORT).show();
    }
    private List<ApplicationInfo> checkForLaunchIntent(List<ApplicationInfo> list) {
        ArrayList<ApplicationInfo> applist = new ArrayList<ApplicationInfo>();
        for (ApplicationInfo info : list) {
             if (null != packageManager.getLaunchIntentForPackage(info.packageName)) {
                applist.add(info);
             }
        }
        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_UNINSTALLED_PACKAGES));
            listadaptor = new ApplicationAdapter(AllAppsActivity.this, R.layout.snippet_list_row, applist);
            return null;
        }
        @Override
        protected void onPostExecute(Void result) {
            setListAdapter(listadaptor);
            progress.dismiss();
            super.onPostExecute(result);
        }
        @Override
        protected void onPreExecute() {
            progress = ProgressDialog.show(AllAppsActivity.this, null, "Loading application info...");
            super.onPreExecute();
        }
        @Override
        protected void onProgressUpdate(Void... values) {
            super.onProgressUpdate(values);
        }
    }
}

这里是ApplicationAdapter.java

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;
}
};

下面是列表 的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="wrap_content" >
    <ImageView
        android:id="@+id/app_icon"
        android:layout_width="50dp"
        android:layout_height="50dp"
        android:padding="3dp"
        android:contentDescription="@string/yolo"
        android:scaleType="centerCrop" />
    <LinearLayout
        android:layout_width="fill_parent"
        android:layout_height="fill_parent"
        android:gravity="center_vertical"
        android:orientation="vertical"
        android:paddingLeft="5dp" >
        <TextView
            android:id="@+id/app_name"
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:gravity="center_vertical"
            android:textStyle="bold" />
        <TextView
            android:id="@+id/app_paackage"
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:gravity="center_vertical" />
    </LinearLayout>
    </LinearLayout>

Answer 1

在您的onlisttitemclicked中，您可以调用适配器中的getItem方法。从那里你可以得到你需要的字段，并可以把它们作为参数传递给你的新活动。顺便问一下，你确定你需要一个新的活动吗?也许你可以把碎片换掉。