Java 如何从现有gridview图像实现coverflow布局

我正在使用eclipse。 基本上，我试图实现的是，我有一个gridView，它使用JSON动态地从mysql数据库获取图像。 现在，我想将它们显示为coverflow视图，而不是gridview

我在互联网上搜索过，但找不到动态图像的任何库或示例，我只找到了存储在应用程序本身而不是外部数据库中的静态图像

我的代码如下：-

MainActivity.java：-

public class MainActivity extends Activity implements OnClickListener {
// Log tag
private static final String TAG = MainActivity.class.getSimpleName();

// Movies json url
private static final String url = "http://eventassociate.com/wedding/photomania";
private ProgressDialog pDialog;
private List<Movie> movieList = new ArrayList<Movie>();
private PullToRefreshGridView mPullRefreshGridView;
private GridView gridView;
private CustomListAdapter adapter;
ImageButton blackcapture;
private static int RESULT_LOAD_IMAGE = 1;
String picturePath;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);


    getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
        WindowManager.LayoutParams.FLAG_FULLSCREEN);

    setContentView(R.layout.gallary_activity_main);

    overridePendingTransition(R.anim.push_down_in, R.anim.push_down_out);




    mPullRefreshGridView = (PullToRefreshGridView) findViewById(R.id.list);
    gridView = mPullRefreshGridView.getRefreshableView();


    mPullRefreshGridView.setOnRefreshListener(new OnRefreshListener2<GridView>() {

        @Override
        public void onPullDownToRefresh(PullToRefreshBase<GridView> refreshView) {


            adapter.notifyDataSetChanged();
            gridView.setAdapter(adapter);
            gridView.invalidateViews();

            mPullRefreshGridView.onRefreshComplete();

        }










    adapter = new CustomListAdapter(this, movieList);
    gridView.setAdapter(adapter);




    gridView.setOnItemClickListener(new OnItemClickListener() {
        @Override
        public void onItemClick(AdapterView<?> parent, View v,
                int position, long id) {

            Movie m5 = movieList.get(position);

            Intent i = new Intent(getApplicationContext(),
                    FullImageActivity.class);

            i.putExtra("movieobject", m5);
            startActivity(i);


        }
    });

}

我成功地将其实现为GridView，但在将其实现为coverflow设计或类似的东西时遇到了麻烦。 我在网上搜索并找到了以下代码，但仅限于静态图像：-

public class SimpleExample extends Activity {

// =============================================================================
// Child views
// =============================================================================

private FancyCoverFlow fancyCoverFlow;

// =============================================================================
// Supertype overrides
// =============================================================================

/**
 * Called when the activity is first created.
 */
@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);

    this.fancyCoverFlow = (FancyCoverFlow) this.findViewById(R.id.fancyCoverFlow);

    this.fancyCoverFlow.setAdapter(new FancyCoverFlowSampleAdapter());
    this.fancyCoverFlow.setUnselectedAlpha(1.0f);
    this.fancyCoverFlow.setUnselectedSaturation(0.0f);
    this.fancyCoverFlow.setUnselectedScale(0.5f);
    this.fancyCoverFlow.setSpacing(50);
    this.fancyCoverFlow.setMaxRotation(0);
    this.fancyCoverFlow.setScaleDownGravity(0.2f);
    this.fancyCoverFlow.setActionDistance(FancyCoverFlow.ACTION_DISTANCE_AUTO);

}

// =============================================================================
// Private classes
// =============================================================================

}

Adapter.java：-

public class FancyCoverFlowSampleAdapter extends FancyCoverFlowAdapter {

// =============================================================================
// Private members
// =============================================================================

private int[] images = {R.drawable.image1, R.drawable.image2, R.drawable.image3, R.drawable.image4, R.drawable.image5, R.drawable.image6,};

// =============================================================================
// Supertype overrides
// =============================================================================

@Override
public int getCount() {
    return images.length;
}

@Override
public Integer getItem(int i) {
    return images[i];
}

@Override
public long getItemId(int i) {
    return i;
}

@Override
public View getCoverFlowItem(int i, View reuseableView, ViewGroup viewGroup) {
    ImageView imageView = null;

    if (reuseableView != null) {
        imageView = (ImageView) reuseableView;
    } else {
        imageView = new ImageView(viewGroup.getContext());
        imageView.setScaleType(ImageView.ScaleType.CENTER_INSIDE);
        imageView.setLayoutParams(new FancyCoverFlow.LayoutParams(300, 400));

    }

    imageView.setImageResource(this.getItem(i));
    return imageView;
}

}

有人能帮我解决我的问题吗。 谢谢

我的coverflow最终代码：-

主要活动：-

public class MainActivity extends Activity implements OnClickListener {
// Log tag
private static final String TAG = album.MainActivity.class.getSimpleName();

// Movies json url
private static final String url = "http://eventassociate.com/wedding/androidadminimages";
private ProgressDialog pDialog;
private List<Moviealbum> movieList = new ArrayList<Moviealbum>();

private FancyCoverFlow fancyCoverFlow;


private CustomListAdapter adapter;


@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);



    getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
        WindowManager.LayoutParams.FLAG_FULLSCREEN);



    setContentView(R.layout.album_activity_main);

    overridePendingTransition(R.anim.push_down_in, R.anim.push_down_out);

    this.fancyCoverFlow = (FancyCoverFlow) this.findViewById(R.id.list);

    adapter = new CustomListAdapter(this, movieList);

    this.fancyCoverFlow.setAdapter(new CustomListAdapter(this, movieList));
    this.fancyCoverFlow.setUnselectedAlpha(1.0f);
    this.fancyCoverFlow.setUnselectedSaturation(0.0f);
    this.fancyCoverFlow.setUnselectedScale(0.5f);
    this.fancyCoverFlow.setSpacing(50);
    this.fancyCoverFlow.setMaxRotation(0);
    this.fancyCoverFlow.setScaleDownGravity(0.2f);
    this.fancyCoverFlow.setActionDistance(FancyCoverFlow.ACTION_DISTANCE_AUTO);














    fancyCoverFlow.setOnItemClickListener(new OnItemClickListener() {
        @Override
        public void onItemClick(AdapterView<?> parent, View v,
                int position, long id) {

            Moviealbum m5 = movieList.get(position);

            Intent i = new Intent(getApplicationContext(),album.
                    FullImageActivity.class);

            i.putExtra("movieobject", m5);
            startActivity(i);


        }
    });











    pDialog = new ProgressDialog(this);
    // Showing progress dialog before making http request
    pDialog.setMessage("Loading...");
    pDialog.show();

    // changing action bar color
    getActionBar().setBackgroundDrawable(
            new ColorDrawable(Color.parseColor("#1b1b1b")));

    // Creating volley request obj
    JsonArrayRequest movieReq = new JsonArrayRequest(url,
            new Response.Listener<JSONArray>() {
                @Override
                public void onResponse(JSONArray response) {
                    Log.d(TAG, response.toString());
                    hidePDialog();

                    // Parsing json
                    for (int i = 0; i < response.length(); i++) {
                        try {

                            JSONObject obj = response.getJSONObject(i);
                            Moviealbum movie = new Moviealbum();
                            movie.setTitle(obj.getString("no"));
                            movie.setThumbnailUrl(obj.getString("alinks"));

                            // adding movie to movies array
                            movieList.add(movie);

                        } catch (JSONException e) {
                            e.printStackTrace();
                        }

                    }

                    // notifying list adapter about data changes
                    // so that it renders the list view with updated data
                    adapter.notifyDataSetChanged();
                }
            }, new Response.ErrorListener() {
                @Override
                public void onErrorResponse(VolleyError error) {
                    VolleyLog.d(TAG, "Error: " + error.getMessage());
                    hidePDialog();

                }
            });

    // Adding request to request queue...................................
    AppController.getInstance().addToRequestQueue(movieReq);
}

@Override
public void onDestroy() {
    super.onDestroy();
    hidePDialog();
}

private void hidePDialog() {
    if (pDialog != null) {
        pDialog.dismiss();
        pDialog = null;
    }
}

public类MainActivity扩展活动实现OnClickListener{
//日志标签
私有静态最终字符串标记=album.MainActivity.class.getSimpleName（）；
//电影json url
私有静态最终字符串url=”http://eventassociate.com/wedding/androidadminimages";
私人对话；
private List movieList=new ArrayList（）；
私人的幻想溢出幻想溢出；
专用自定义列表适配器；
@凌驾
创建时受保护的void（Bundle savedInstanceState）{
super.onCreate（savedInstanceState）；
getWindow（）.setFlags（WindowManager.LayoutParams.FLAG_全屏，
WindowManager.LayoutParams.FLAG（全屏）；
setContentView（R.layout.album\u activity\u main）；
覆盖转换（R.anim.push\u down\u in，R.anim.push\u down\u out）；
this.fancyCoverFlow=（fancyCoverFlow）this.findViewById（R.id.list）；
adapter=新的CustomListAdapter（此，movieList）；
this.fancyCoverFlow.setAdapter（新的CustomListAdapter（this，movieList））；
这个.fancyCoverFlow.setUnselectedAlpha（1.0f）；
此.fancyCoverFlow.setUnselectedSaturation（0.0f）；
此.fancyCoverFlow.setUnselectedScale（0.5f）；
this.fancyCoverFlow.setspace（50）；
this.fancyCoverFlow.setMaxRotation（0）；
此.fancyCoverFlow.SetScaleDown重力（0.2f）；
this.fancyCoverFlow.setActionDistance（fancyCoverFlow.ACTION\u DISTANCE\u AUTO）；
setOnItemClickListener（新的OnItemClickListener（）{
@凌驾
public void onItemClick（AdapterView父视图、视图v、，
内部位置，长id）{
Moviealbum m5=movieList.get（位置）；
Intent i=新的Intent（getApplicationContext（），相册）。
FullImageActivity.class）；
i、 putExtra（“电影对象”，m5）；
星触觉（i）；
}
});
pDialog=新建进度对话框（此对话框）；
//在发出http请求之前显示进度对话框
设置消息（“加载…”）；
pDialog.show（）；
//更改操作栏颜色
getActionBar（）.setBackgroundDrawable(
新的可着色（Color.parseColor（#1b1b1b”）；
//创建截击请求对象
JsonArrayRequest movieReq=新的JsonArrayRequest（url，
新的Response.Listener（）{
@凌驾
公共void onResponse（JSONArray响应）{
Log.d（TAG，response.toString（））；
hidePDialog（）；
//解析json
对于（int i=0；i

适配器类：-

public class CustomListAdapter extends  FancyCoverFlowAdapter  {
private Activity activity;


private LayoutInflater inflater;
List<Moviealbum> movieItems;
ImageLoader imageLoader = AppController.getInstance().getImageLoader();

public CustomListAdapter(Activity activity, List<Moviealbum> movieItems) {
    this.activity = activity;
    this.movieItems = movieItems;
}







@Override
public int getCount() {
    return movieItems.size();
}

@Override
public Object getItem(int location) {
    return movieItems.get(location);
}

@Override
public long getItemId(int position) {
    return position;
}

 @Override
    public View getCoverFlowItem(int position, View reuseableView, ViewGroup viewGroup) {




    if (inflater == null)
        inflater = (LayoutInflater) activity
                .getSystemService(Context.LAYOUT_INFLATER_SERVICE);
    if (reuseableView == null)
        reuseableView = inflater.inflate(R.layout.gallary_list_row, null);

    if (imageLoader == null)
        imageLoader = AppController.getInstance().getImageLoader();
    NetworkImageView thumbNail = (NetworkImageView) reuseableView
            .findViewById(R.id.thumbnail);











    // ...............................................

    TextView title = (TextView) reuseableView.findViewById(R.id.title);

    // getting movie data for the row
    Moviealbum m = movieItems.get(position);

    // thumbnail image
    thumbNail.setImageUrl(m.getThumbnailUrl(), imageLoader);

    // title
    title.setText(m.getTitle());







    return reuseableView;

}

公共类CustomListAdapter扩展了FancyCoverFlowAdapter{
私人活动；
私人充气机；
列出电影项目；
ImageLoader ImageLoader=AppController.getInstance（）.getImageLoader（）；
公共CustomListAdapter（活动，列出电影项目）{
这个。活动=活动；
this.movieItems=movieItems；
}
@凌驾
public int getCount（）{
返回movieItems.size（）；
}
@凌驾
公共对象getItem（int位置）{
返回电影项目。获取（位置）；
}
@凌驾
公共长getItemId（int位置）{
返回位置；
}
@凌驾
公共视图getCoverFlowItem（int位置、视图重用视图、视图组视图组）{
如果（充气器==null）
充气器=（充气器）活动
.getSystemService（上下文布局\充气机\服务）；
if（reuseableView==null）
REUSEABLEVEIW=充气机。充气（R.layout.gallary\U list\U row，null）；
如果（imageLoader==null）
imageLoader=AppController.getInstance（）.getImageLoader（）；
NetworkImageView缩略图=（NetworkImageView）可重用视图
.findviewbyd（R.id.thumboil）；
// ......
public class MainActivity extends Activity implements OnClickListener {
// Log tag
private static final String TAG = album.MainActivity.class.getSimpleName();

// Movies json url
private static final String url = "http://eventassociate.com/wedding/androidadminimages";
private ProgressDialog pDialog;
private List<Moviealbum> movieList = new ArrayList<Moviealbum>();

private FancyCoverFlow fancyCoverFlow;


private CustomListAdapter adapter;


@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);



    getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
        WindowManager.LayoutParams.FLAG_FULLSCREEN);



    setContentView(R.layout.album_activity_main);

    overridePendingTransition(R.anim.push_down_in, R.anim.push_down_out);

    this.fancyCoverFlow = (FancyCoverFlow) this.findViewById(R.id.list);

    adapter = new CustomListAdapter(this, movieList);

    this.fancyCoverFlow.setAdapter(new CustomListAdapter(this, movieList));
    this.fancyCoverFlow.setUnselectedAlpha(1.0f);
    this.fancyCoverFlow.setUnselectedSaturation(0.0f);
    this.fancyCoverFlow.setUnselectedScale(0.5f);
    this.fancyCoverFlow.setSpacing(50);
    this.fancyCoverFlow.setMaxRotation(0);
    this.fancyCoverFlow.setScaleDownGravity(0.2f);
    this.fancyCoverFlow.setActionDistance(FancyCoverFlow.ACTION_DISTANCE_AUTO);














    fancyCoverFlow.setOnItemClickListener(new OnItemClickListener() {
        @Override
        public void onItemClick(AdapterView<?> parent, View v,
                int position, long id) {

            Moviealbum m5 = movieList.get(position);

            Intent i = new Intent(getApplicationContext(),album.
                    FullImageActivity.class);

            i.putExtra("movieobject", m5);
            startActivity(i);


        }
    });











    pDialog = new ProgressDialog(this);
    // Showing progress dialog before making http request
    pDialog.setMessage("Loading...");
    pDialog.show();

    // changing action bar color
    getActionBar().setBackgroundDrawable(
            new ColorDrawable(Color.parseColor("#1b1b1b")));

    // Creating volley request obj
    JsonArrayRequest movieReq = new JsonArrayRequest(url,
            new Response.Listener<JSONArray>() {
                @Override
                public void onResponse(JSONArray response) {
                    Log.d(TAG, response.toString());
                    hidePDialog();

                    // Parsing json
                    for (int i = 0; i < response.length(); i++) {
                        try {

                            JSONObject obj = response.getJSONObject(i);
                            Moviealbum movie = new Moviealbum();
                            movie.setTitle(obj.getString("no"));
                            movie.setThumbnailUrl(obj.getString("alinks"));

                            // adding movie to movies array
                            movieList.add(movie);

                        } catch (JSONException e) {
                            e.printStackTrace();
                        }

                    }

                    // notifying list adapter about data changes
                    // so that it renders the list view with updated data
                    adapter.notifyDataSetChanged();
                }
            }, new Response.ErrorListener() {
                @Override
                public void onErrorResponse(VolleyError error) {
                    VolleyLog.d(TAG, "Error: " + error.getMessage());
                    hidePDialog();

                }
            });

    // Adding request to request queue...................................
    AppController.getInstance().addToRequestQueue(movieReq);
}

@Override
public void onDestroy() {
    super.onDestroy();
    hidePDialog();
}

private void hidePDialog() {
    if (pDialog != null) {
        pDialog.dismiss();
        pDialog = null;
    }
}

public class CustomListAdapter extends  FancyCoverFlowAdapter  {
private Activity activity;


private LayoutInflater inflater;
List<Moviealbum> movieItems;
ImageLoader imageLoader = AppController.getInstance().getImageLoader();

public CustomListAdapter(Activity activity, List<Moviealbum> movieItems) {
    this.activity = activity;
    this.movieItems = movieItems;
}







@Override
public int getCount() {
    return movieItems.size();
}

@Override
public Object getItem(int location) {
    return movieItems.get(location);
}

@Override
public long getItemId(int position) {
    return position;
}

 @Override
    public View getCoverFlowItem(int position, View reuseableView, ViewGroup viewGroup) {




    if (inflater == null)
        inflater = (LayoutInflater) activity
                .getSystemService(Context.LAYOUT_INFLATER_SERVICE);
    if (reuseableView == null)
        reuseableView = inflater.inflate(R.layout.gallary_list_row, null);

    if (imageLoader == null)
        imageLoader = AppController.getInstance().getImageLoader();
    NetworkImageView thumbNail = (NetworkImageView) reuseableView
            .findViewById(R.id.thumbnail);











    // ...............................................

    TextView title = (TextView) reuseableView.findViewById(R.id.title);

    // getting movie data for the row
    Moviealbum m = movieItems.get(position);

    // thumbnail image
    thumbNail.setImageUrl(m.getThumbnailUrl(), imageLoader);

    // title
    title.setText(m.getTitle());







    return reuseableView;

}