我在我的应用程序中集成了 flickr，但 gridview 中的图像显示行与行之间有很多空间。我无法找出为什么行与行之间会出现这么多空间。
照片 fragment .java
public class PhotosFragment extends Fragment {
private FragmentActivity myContext;
String FlickrPhotoPath, FlickrPhotoPath2;
Bitmap bmFlickr, bmFlickr2;
String FlickrQuery_url = "https://api.flickr.com/services/rest/?method=flickr.photos.search";
String FlickrQuery_per_page = "&per_page=2";
String FlickrQuery_nojsoncallback = "&nojsoncallback=1";
String FlickrQuery_format = "&format=json";
String FlickrQuer
y_tag = "&tags=";
String FlickrQuery_key = "&api_key=";
ArrayList<String> imageUrls = new ArrayList<String>();
String FlickrApiKey = "xyz";
@Override
public void onAttach(Activity activity) {
if (activity instanceof FragmentActivity) {
myContext = (FragmentActivity) activity;
}
super.onAttach(activity);
}
DisplayImageOptions options;
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.photos, container, false);
ImageView img2 = (ImageView) rootView.findViewById(R.id.imageView3);
ImageView img3 = (ImageView) rootView.findViewById(R.id.imageView1);
rootView.setVerticalScrollBarEnabled(false);
options = new DisplayImageOptions.Builder()
.showImageOnLoading(R.drawable.icon)
.showImageForEmptyUri(R.drawable.icon)
.showImageOnFail(R.drawable.icon)
.cacheInMemory(true)
.cacheOnDisk(true)
.considerExifParams(true)
.bitmapConfig(Bitmap.Config.RGB_565)
.build();
String searchResult = QueryFlickr("Java");
String jsonResult = ParseJSON(searchResult);
String searchResult2 = QueryFlickr("Android");
String jsonResult2 = ParseJSON2(searchResult2);
if (bmFlickr != null) {
img2.setImageBitmap(bmFlickr);
}
if (bmFlickr2 != null) {
img3.setImageBitmap(bmFlickr2);
}
GridView grid = (GridView) rootView.findViewById(R.id.gridView);
((GridView) grid).setAdapter(new ImageAdapter());
grid.setFocusable(false);
GridView grid2 = (GridView) rootView.findViewById(R.id.gridView2);
grid2.setFocusable(false);
((GridView) grid2).setAdapter(new ImageAdapter());
return rootView;
}
public class ImageAdapter extends BaseAdapter {
private LayoutInflater inflater;
ImageAdapter() {
inflater = LayoutInflater.from(getActivity());
}
@Override
public int getCount() {
return imageUrls.size();
}
@Override
public Object getItem(int position) {
return null;
}
@Override
public long getItemId(int position) {
return position;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
final ViewHolder holder;
View view = convertView;
if (view == null) {
view = inflater.inflate(R.layout.grid_single, parent, false);
holder = new ViewHolder();
assert view != null;
holder.imageView = (ImageView) view.findViewById(R.id.grid_image);
// holder.progressBar = (ProgressBar) view.findViewById(R.id.progress);
view.setTag(holder);
} else {
holder = (ViewHolder) view.getTag();
}
ImageLoader.getInstance()
.displayImage(imageUrls.get(position).toString(), holder.imageView, options, new SimpleImageLoadingListener() {
@Override
public void onLoadingStarted(String imageUri, View view) {
}
@Override
public void onLoadingFailed(String imageUri, View view, FailReason failReason) {
}
@Override
public void onLoadingComplete(String imageUri, View view, Bitmap loadedImage) {
}
}, new ImageLoadingProgressListener() {
@Override
public void onProgressUpdate(String imageUri, View view, int current, int total) {
// holder.progressBar.setProgress(Math.round(100.0f * current / total));
}
});
return view;
}
}
static class ViewHolder {
ImageView imageView;
ProgressBar progressBar;
}
private String QueryFlickr(String q) {
String qResult = null;
String qString =
FlickrQuery_url
+ FlickrQuery_per_page
+ FlickrQuery_nojsoncallback
+ FlickrQuery_format
+ FlickrQuery_tag + q
+ FlickrQuery_key + FlickrApiKey;
HttpClient httpClient = new DefaultHttpClient();
HttpGet httpGet = new HttpGet(qString);
try {
HttpEntity httpEntity = httpClient.execute(httpGet).getEntity();
if (httpEntity != null) {
InputStream inputStream = httpEntity.getContent();
Reader in = new InputStreamReader(inputStream);
BufferedReader bufferedreader = new BufferedReader(in);
StringBuilder stringBuilder = new StringBuilder();
String stringReadLine = null;
while ((stringReadLine = bufferedreader.readLine()) != null) {
stringBuilder.append(stringReadLine + "\n");
}
qResult = stringBuilder.toString();
}
} catch (ClientProtocolException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return qResult;
}
private String ParseJSON(String json) {
String jResult = null;
// String jResult2 = null;
bmFlickr = null;
String flickrId;
String flickrOwner;
String flickrSecret;
String flickrServer;
String flickrFarm;
String flickrTitle;
try {
JSONObject JsonObject = new JSONObject(json);
JSONObject Json_photos = JsonObject.getJSONObject("photos");
JSONArray JsonArray_photo = Json_photos.getJSONArray("photo");
//We have only one photo in this exercise
JSONObject FlickrPhoto = JsonArray_photo.getJSONObject(0);
flickrId = FlickrPhoto.getString("id");
flickrOwner = FlickrPhoto.getString("owner");
flickrSecret = FlickrPhoto.getString("secret");
flickrServer = FlickrPhoto.getString("server");
flickrFarm = FlickrPhoto.getString("farm");
flickrTitle = FlickrPhoto.getString("title");
jResult = "\nid: " + flickrId + "\n"
+ "owner: " + flickrOwner + "\n"
+ "secret: " + flickrSecret + "\n"
+ "server: " + flickrServer + "\n"
+ "farm: " + flickrFarm + "\n"
+ "title: " + flickrTitle + "\n";
/* jResult2 = "\nid: " + flickrId + "\n"
+ "owner: " + flickrOwner + "\n"
+ "secret: " + flickrSecret + "\n"
+ "server: " + flickrServer + "\n"
+ "farm: " + flickrFarm + "\n"
+ "title: " + flickrTitle + "\n"; */
bmFlickr = LoadPhotoFromFlickr(flickrId, flickrOwner, flickrSecret,
flickrServer, flickrFarm, flickrTitle);
} catch (JSONException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return jResult;
}
private String ParseJSON2(String json) {
String jResult = null;
// String jResult2 = null;
bmFlickr2 = null;
String flickrId;
String flickrOwner;
String flickrSecret;
String flickrServer;
String flickrFarm;
String flickrTitle;
try {
JSONObject JsonObject = new JSONObject(json);
JSONObject Json_photos = JsonObject.getJSONObject("photos");
JSONArray JsonArray_photo = Json_photos.getJSONArray("photo");
//We have only one photo in this exercise
JSONObject FlickrPhoto = JsonArray_photo.getJSONObject(0);
flickrId = FlickrPhoto.getString("id");
flickrOwner = FlickrPhoto.getString("owner");
flickrSecret = FlickrPhoto.getString("secret");
flickrServer = FlickrPhoto.getString("server");
flickrFarm = FlickrPhoto.getString("farm");
flickrTitle = FlickrPhoto.getString("title");
jResult = "\nid: " + flickrId + "\n"
+ "owner: " + flickrOwner + "\n"
+ "secret: " + flickrSecret + "\n"
+ "server: " + flickrServer + "\n"
+ "farm: " + flickrFarm + "\n"
+ "title: " + flickrTitle + "\n";
/* jResult2 = "\nid: " + flickrId + "\n"
+ "owner: " + flickrOwner + "\n"
+ "secret: " + flickrSecret + "\n"
+ "server: " + flickrServer + "\n"
+ "farm: " + flickrFarm + "\n"
+ "title: " + flickrTitle + "\n"; */
bmFlickr2 = LoadPhotoFromFlickr2(flickrId, flickrOwner, flickrSecret,
flickrServer, flickrFarm, flickrTitle);
} catch (JSONException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return jResult;
}
private Bitmap LoadPhotoFromFlickr(
String id, String owner, String secret,
String server, String farm, String title) {
Bitmap bm = null;
FlickrPhotoPath =
"http://farm" + farm + ".static.flickr.com/"
+ server + "/" + id + "_" + secret + "_m.jpg";
imageUrls.add(FlickrPhotoPath);
imageUrls.add(FlickrPhotoPath);
imageUrls.add(FlickrPhotoPath);
imageUrls.add(FlickrPhotoPath);
imageUrls.add(FlickrPhotoPath);
imageUrls.add(FlickrPhotoPath);
imageUrls.add(FlickrPhotoPath);
imageUrls.add(FlickrPhotoPath);
URL FlickrPhotoUrl = null;
try {
FlickrPhotoUrl = new URL(FlickrPhotoPath);
HttpURLConnection httpConnection
= (HttpURLConnection) FlickrPhotoUrl.openConnection();
httpConnection.setDoInput(true);
httpConnection.connect();
InputStream inputStream = httpConnection.getInputStream();
bm = BitmapFactory.decodeStream(inputStream);
} catch (MalformedURLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return bm;
}
private Bitmap LoadPhotoFromFlickr2(
String id, String owner, String secret,
String server, String farm, String title) {
Bitmap bm = null;
FlickrPhotoPath2 =
"http://farm" + farm + ".static.flickr.com/"
+ server + "/" + id + "_" + secret + "_m.jpg";
imageUrls.add(FlickrPhotoPath2);
imageUrls.add(FlickrPhotoPath2);
imageUrls.add(FlickrPhotoPath2);
imageUrls.add(FlickrPhotoPath2);
imageUrls.add(FlickrPhotoPath2);
imageUrls.add(FlickrPhotoPath2);
imageUrls.add(FlickrPhotoPath2);
imageUrls.add(FlickrPhotoPath2);
URL FlickrPhotoUrl2 = null;
try {
FlickrPhotoUrl2 = new URL(FlickrPhotoPath2);
HttpURLConnection httpConnection
= (HttpURLConnection) FlickrPhotoUrl2.openConnection();
httpConnection.setDoInput(true);
httpConnection.connect();
InputStream inputStream = httpConnection.getInputStream();
bm = BitmapFactory.decodeStream(inputStream);
} catch (MalformedURLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return bm;
}
}
照片.xml
<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="fill_parent"
android:background="#FFFFFF">
<RelativeLayout
android:id="@+id/layout4"
android:layout_width="match_parent"
android:layout_height="fill_parent"
>
<RelativeLayout
android:id="@+id/layout1"
android:layout_width="match_parent"
android:layout_height="fill_parent"
>
<ImageView
android:id="@+id/imageView3"
android:layout_width="match_parent"
android:layout_height="200dp"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true"
android:adjustViewBounds="true"
android:cropToPadding="false"
android:scaleType="fitXY"
/>
</RelativeLayout>
<RelativeLayout
android:id="@+id/layout2"
android:layout_width="match_parent"
android:layout_height="fill_parent"
android:layout_below="@+id/layout1"
>
<ImageView
android:id="@+id/imageView1"
android:layout_width="180dp"
android:layout_height="210dp"
android:layout_alignParentLeft="true"
android:adjustViewBounds="true"
android:cropToPadding="false"
android:paddingTop="1dp"
android:scaleType="fitXY"
/>
<GridView
android:id="@+id/gridView"
android:layout_width="180dp"
android:layout_height="210dp"
android:layout_alignParentRight="true"
android:layout_toRightOf="@+id/imageView1"
android:adjustViewBounds="true"
android:cropToPadding="false"
android:numColumns="2"
android:scaleType="fitXY"
></GridView>
</RelativeLayout>
<RelativeLayout
android:id="@+id/layout3"
android:layout_width="match_parent"
android:layout_height="fill_parent"
android:layout_below="@+id/layout2"
android:padding="15dp">
<com.pepup.league.ui.fonts.AvenirNextLtRegular
android:id="@+id/textView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerInParent="true"
android:text="JULY-2014"
android:textColor="#b2b2b2"
android:textSize="15sp" />
<View
android:id="@+id/line1"
android:layout_width="fill_parent"
android:layout_height="1dp"
android:layout_centerVertical="true"
android:layout_marginRight="5dp"
android:layout_toLeftOf="@+id/textView"
android:background="#b2b2b2" />
<View
android:id="@+id/line2"
android:layout_width="fill_parent"
android:layout_height="1dp"
android:layout_centerVertical="true"
android:layout_marginLeft="5dp"
android:layout_toRightOf="@+id/textView"
android:background="#b2b2b2" />
</RelativeLayout>
<RelativeLayout
android:id="@+id/layout5"
android:layout_width="match_parent"
android:layout_height="fill_parent"
android:layout_below="@+id/layout3">
<GridView
android:id="@+id/gridView2"
android:layout_width="fill_parent"
android:layout_height="200dp"
android:adjustViewBounds="true"
android:cropToPadding="false"
android:horizontalSpacing="0dp"
android:numColumns="5"
android:scaleType="fitXY"
android:stretchMode="columnWidth"
android:verticalSpacing="0dp"></GridView>
</RelativeLayout>
</RelativeLayout>
</ScrollView>
grid_single.xml
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical"
android:padding="5dp">
<ImageView
android:id="@+id/grid_image"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:gravity="center"></ImageView>
</LinearLayout>
最佳答案
这是因为你在 LinearLayout 的 grid_single.xm 中使用了 android:padding="5dp"。如果你想删除空格，你需要像这样使用 xml
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical">
<ImageView
android:id="@+id/grid_image"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:gravity="center"></ImageView>
</LinearLayout>
关于android - 如何使用从 flickr 获取的图像删除 gridview 行之间的空间？，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/25917327/