使用 onItemClickListener 单击时，从数据库获取的 gridview 中的图像未全屏显示

Question

我正在使用 GridView 来显示来自 mysql 数据库的图像。但是，当我尝试使用 OnItemClickListener 单击以全屏显示图像时，该应用程序不会崩溃，但是它不会显示我的 UI.

这里是 MainActivity 的代码：-

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 GridView gridView;
private CustomListAdapter adapter;
Button blackcapture;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.gallary_activity_main);

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

    gridView = (GridView) findViewById(R.id.list);

    blackcapture = (Button) findViewById(R.id.bottom_button);
    blackcapture.setOnClickListener(this);

    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);


        }
    });











    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);
                            Movie movie = new Movie();
                            movie.setTitle(obj.getString("No"));
                            movie.setThumbnailUrl(obj.getString("flinks"));

                            // 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();

                }
            });

自定义适配器代码：-

public class CustomListAdapter 扩展 BaseAdapter { 私人 Activity activity;

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

public CustomListAdapter(Activity activity, List<Movie> 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 getView(int position, View convertView, ViewGroup parent) {




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

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








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

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

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

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

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







    return convertView;

}

电影代码 Class:-

public class Movie implements Parcelable{
private String title,thumbnailUrl;



public Movie() {
    // TODO Auto-generated constructor stub
}

public Movie(String name, String thumbnailUrl
        ) {
    this.title = name;
    this.thumbnailUrl = thumbnailUrl;

}



public String getTitle() {
    return title;
}

public void setTitle(String name) {
    this.title = name;
}

public String getThumbnailUrl() {
    return thumbnailUrl;
}

public void setThumbnailUrl(String thumbnailUrl) {
    this.thumbnailUrl = "http://eventassociate.com/wedding/"+thumbnailUrl;
}

 // Parcelling part
public Movie(Parcel in){
    String[] data = new String[2];

    in.readStringArray(data);
    this.title = data[0];
    this.thumbnailUrl = data[1];

}








@Override
public int describeContents() {
    // TODO Auto-generated method stub
    return 0;
}

@Override
public void writeToParcel(Parcel dest, int flags) {
    dest.writeStringArray(new String[] {this.title,
                                        this.thumbnailUrl,
                                        });
}

}

全图代码Activity:-

public class FullImageActivity 扩展 Activity {

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

 // get intent data



    Intent i = getIntent();

    Movie myParcelableObject = (Movie) i.getParcelableExtra("movieobject");



   String alp =  myParcelableObject.getThumbnailUrl();


    Toast.makeText(getApplicationContext(), alp, Toast.LENGTH_LONG).show();



    ImageView imageView = (ImageView) findViewById(R.id.full_image_view);







}

}

Answer 1

您的 FullImageActivity

中存在一些问题

您正在初始化 CustomListAdapter int FullImageActivity 为什么？这里不需要。
你得到了上一个 activity 的位置。最好从bundle中获取图片的id。

如果您从捆绑包中获取 id，则访问数据库并根据 id 获取图像并将图像分配给 imageview。

使用 onItemClickListener 单击时，从数据库获取的 gridview 中的图像未全屏显示

Images in gridview fetched from database are not showing in fullscreen upon Clicking by using onItemClickListener

java

mysql

android

listview

gridview