Question

我在外部存储中创建了数据库，并且已经为表中的每个步骤存储了图像路径和音频路径。现在从一个新的Android应用程序我想访问表并提取自定义列表视图与图像和文本。图像以表格形式存储在字符串中。如何在自定义列表视图中获取图像和视图？

Answer 1

static DisplayImageOptions op;
static ImageLoader loader = ImageLoader.getInstance();

在你的onCreate

op = new DisplayImageOptions.Builder()
            .displayer(new RoundedBitmapDisplayer(20)).cacheOnDisc(true)
            .considerExifParams(true).build();

ListView list = (ListView) findViewById(R.id.customwhateverlist);
String query = "SELECT * FROM YOURTABLE with whatever you want  ";

Cursor cursor = sqLiteDatabase.rawQuery(query, null);

((ListView) list).setAdapter(new MyCallitwhatyouwillAdapter(context,cursor, 0));

THEN ...

private static final class MyCallItWhatYouWillAdapter extends CursorAdapter {

    MyCallitwhatyouwillAdapter(Context context, Cursor cursor, int flags) {
        super(context, cursor, flags);

        mInflater = LayoutInflater.from(context);
    }

    @Override
    public View newView(Context context, Cursor cursor, ViewGroup parent) {
        View v = mInflater.inflate(R.layout.SOMECOOLLAYOUT, parent, false);
        return v;
    }


    @Override
    public void bindView(View view, Context context, Cursor cursor) {
        ImageView iv = (ImageView) view.findViewById(R.id.YOURIMAGETHINGEE);
        //FOR IMAGELOADER YOU MUST HAVE "_id" INTEGER PRIMARY KEY" in database!!!
        TextView blah = (TextView) view.findViewById(R.id._id);
        blah.setText(cursor.getString(cursor.getColumnIndex("SomethingNiceColumn")));
loader.init(ImageLoaderConfiguration.createDefault(context));  
   loader.displayImage(cursor.getString(cursor.getColumnIndex("SavedPathToImage")), iv, op);
    }


    LayoutInflater mInflater;
}

您需要将imageloader添加为库。你可以在这里得到它。 https://github.com/nostra13/Android-Universal-Image-Loader

在Android应用程序中自定义Listview与图像和文本

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