Question

我正在从事音乐流媒体服务项目。我首先在启动应用程序时显示缩略图夹克图像。我已经获取了所有String Json结果，并且我已经使用Gson lib将Jason结果转换为hashmap。我想要做的是将基本网址与地图值相结合并返回？或传递结果，以便我可以将结果与另一个线程一起使用以显示缩略图图像。请给我一些答案.. :(

MainActivity.java

private static final String baseURLforgetNewMusic = "https://s3-ap-northeast-1.amazonaws.com/goblinsbucket/Artists/";
....
@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);
    setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);

    new Connection().execute(getMusicInfo_URL + "getNewMusic.php");
    // Connect to the server.
}

private class Connection extends AsyncTask<String, Void, String> {

    @Override
    protected String doInBackground(String... urls) {

        return getMusicInfo(urls[0]);
    }

    @Override
    protected void onPostExecute(String result) {
        super.onPostExecute(result);

    }
}
....

private String getMusicInfo(String url) {

    InputStream inputStream = null;
    String inputStr = "";

    HashMap<String, Object> map = new HashMap<String, Object>();

    try {
        URL getMusicUrl = new URL(url);
        conn = (HttpURLConnection) getMusicUrl.openConnection();
        conn.setDoInput(true);
        conn.connect();
        Log.d(TAGCP, "MADE POST REQUEST TO THE GIVEN URL");

        inputStream = conn.getInputStream();

        if (inputStream != null) {
            inputStr = Util.convertInputStreamToString(inputStream);
            Log.i(TAGCS, inputStr);

            Music list = new Gson().fromJson(inputStr, Music.class);
            for (Music.MusicInfo info : list.musicInfo) {
                System.out.println(baseURLforgetNewMusic + info.artists
                        + "/" + info.file_name);
            }

        } else {
            inputStr = "Did not work!";
            Log.d(TAGRR, inputStr);
        }
    } catch (Exception e) {
        Log.i("InputStream", e.getLocalizedMessage());
    }

    return inputStr;

}

Results: (I want to use these url to show thumbnail images on the main view.)
I/System.out(22054): https://s3-ap-northeast-1.amazonaws.com/goblinsbucket/Artists/BrunoMars/Grenade
I/System.out(22054): https://s3-ap-northeast-1.amazonaws.com/goblinsbucket/Artists/BrunoMars/Justthewayyouare

I/System.out(22054): https://s3-ap-northeast-1.amazonaws.com/goblinsbucket/Artists/Beenzino/Aquaman
I/System.out(22054): https://s3-ap-northeast-1.amazonaws.com/goblinsbucket/Artists/Gummy/Thinkaboutme

Answer 1

尝试使用此库显示图像：

https://github.com/nostra13/Android-Universal-Image-Loader

您可以在此处传递网址列表，并在网格视图中显示图片。

如果你想像CoverFlow那样制作酷炫的专辑封面，请使用：

https://github.com/Polidea/android-coverflow

Answer 2

尝试使用截击来加载图像。它比Universal Image Loader更快更容易使用。该库包含一个名为NetworkImageView的类，它将为您加载所有图像。

如何在android中将组合URL作为参数传递？

2 个答案: