Java 使用volley.jar将图像从服务器加载到我的应用程序
我正在尝试使用volley.jar库将图像和对应于每个图像的字符串值从服务器加载到我的android应用程序的listview中。我无法使其正常工作,也无法找出我做错了什么。如果有人能告诉我我做错了什么,我将不胜感激 我有一个电影类,我声明了获取和设置变量title和thumbnailUrl的方法 这是我的CustomListAdapater类Java 使用volley.jar将图像从服务器加载到我的应用程序,java,android,Java,Android,我正在尝试使用volley.jar库将图像和对应于每个图像的字符串值从服务器加载到我的android应用程序的listview中。我无法使其正常工作,也无法找出我做错了什么。如果有人能告诉我我做错了什么,我将不胜感激 我有一个电影类,我声明了获取和设置变量title和thumbnailUrl的方法 这是我的CustomListAdapater类 public class CustomListAdapter extends BaseAdapter { private Activity ac
public class CustomListAdapter extends BaseAdapter {
private Activity activity;
private LayoutInflater inflater;
private 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.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;
}
}
公共类CustomListAdapter扩展了BaseAdapter{
私人活动;
私人充气机;
私人电影项目清单;
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getView(int位置、视图转换视图、视图组父视图){
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(convertView==null)
convertView=充气机。充气(R.layout.list_行,空);
如果(imageLoader==null)
imageLoader=AppController.getInstance().getImageLoader();
NetworkImageView缩略图=(NetworkImageView)convertView
.findviewbyd(R.id.thumboil);
TextView title=(TextView)convertView.findViewById(R.id.title);
//正在获取行的电影数据
Movie m=movieItems.get(位置);
//缩略图像
setImageUrl(m.getThumbnailUrl(),imageLoader);
//头衔
title.setText(m.getTitle());
返回视图;
}
}
这是我的主要活动课
public class MainActivity extends Activity {
// Log tag
private static final String TAG = MainActivity.class.getSimpleName();
// Movies json url
private static final String url = "---------------------my api url-------------";
private ProgressDialog pDialog;
private List<Movie> movieList = new ArrayList<Movie>();
private ListView listView;
private CustomListAdapter adapter;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
listView = (ListView) findViewById(R.id.list);
adapter = new CustomListAdapter(this, movieList);
listView.setAdapter(adapter);
pDialog = new ProgressDialog(this);
// Showing progress dialog before making http request
pDialog.setMessage("Loading...");
pDialog.show();
// changing action bar color
try {
getActionBar().setBackgroundDrawable(
new ColorDrawable(Color.parseColor("#1b1b1b")));
}catch (Exception e) {
}
// Creating volley request obj
JsonArrayRequest movieReq = new JsonArrayRequest(url,
new Response.Listener<JSONArray>() {
@Override
public void onResponse(JSONArray response) {
Log.e(TAG+" response", 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("description"));
String logo = obj.getString("logo");
String src ="------------Image directory path-------------"+logo;
movie.setThumbnailUrl(src);
// 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);
}
}
公共类MainActivity扩展活动{
//日志标签
私有静态最终字符串标记=MainActivity.class.getSimpleName();
//电影json url
私有静态最终字符串url=“--------------我的api url-----------------”;
私人对话;
private List movieList=new ArrayList();
私有列表视图列表视图;
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);
setContentView(R.layout.activity_main);
listView=(listView)findViewById(R.id.list);
adapter=新的CustomListAdapter(此,movieList);
setAdapter(适配器);
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
试一试{
getActionBar().setBackgroundDrawable(
新的可着色(Color.parseColor(#1b1b1b”);
}捕获(例外e){
}
//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.e(TAG+“response”,response.toString());
hidePDialog();
//解析json
对于(int i=0;i
这就是我在日志中得到的
D/OpenGLRenderer﹕ Flushing caches (mode 0)
D/AbsListView﹕ Get MotionRecognitionManager
D/TextLayoutCache﹕ Using debug level: 0 - Debug Enabled: 0
D/libEGL﹕ loaded /system/lib/egl/libGLES_android.so
D/libEGL﹕ loaded /system/lib/egl/libEGL_adreno200.so
D/libEGL﹕ loaded /system/lib/egl/libGLESv1_CM_adreno200.so
D/libEGL﹕ loaded /system/lib/egl/libGLESv2_adreno200.so
I/Adreno200-EGLSUB﹕ <ConfigWindowMatch:2218>: Format RGBA_8888.
D/memalloc﹕ /dev/pmem: Mapped buffer base:0x51edf000 size:307200 offset:0 fd:64
D/OpenGLRenderer﹕ Enabling debug mode 0
I/Adreno200-EGLSUB﹕ <ConfigWindowMatch:2218>: Format RGBA_8888.
D/memalloc﹕ /dev/pmem: Mapped buffer base:0x5203a000 size:8990720 offset:7454720 fd:67
D/memalloc﹕ /dev/pmem: Mapped buffer base:0x5293d000 size:614400 offset:307200 fd:70
D/memalloc﹕ /dev/pmem: Mapped buffer base:0x529d3000 size:20766720 offset:19230720 fd:73
D/memalloc﹕ /dev/pmem: Mapped buffer base:0x53ea1000 size:921600 offset:614400 fd:76
D/Volley﹕ [1] 2.onErrorResponse: MainActivity
D/Volley﹕ [1] Request.finish: 3487 ms: [ ] http:----------------------------myApi.php 0xcb62917f NORMAL 1
D/memalloc﹕ /dev/pmem: Unmapping buffer base:0x51edf000 size:307200 offset:0
D/memalloc﹕ /dev/pmem: Unmapping buffer base:0x5293d000 size:614400 offset:307200
D/memalloc﹕ /dev/pmem: Unmapping buffer base:0x53ea1000 size:921600 offset:614400
D/CLIPBOARD﹕ Hide Clipboard dialog at Starting input: finished by someone else... !
D/opengl渲染器﹕ 正在刷新缓存(模式0)
D/A列表视图﹕ 获取MotionRecognitionManager
D/TextLayoutCache﹕ 使用调试级别:0-已启用调试:0
D/libEGL﹕ loaded/system/lib/egl/libGLES_android.so
D/libEGL﹕ 已加载/system/lib/egl/libEGL_adreno200.so
D/libEGL﹕ loaded/system/lib/egl/libGLESv1_CM_adreno200.so
D/libEGL﹕ loaded/system/lib/egl/libGLESv2_adreno200.so
I/Adreno200 EGLSUB﹕ : 格式为RGBA_8888。
D/memalloc﹕ /dev/pmem:映射的缓冲区基数:0x51edf000大小:307200偏移量:0 fd:64
D/opengl渲染器﹕ 正在启用调试模式0
I/Adreno200 EGLSUB﹕ : 格式为RGBA_8888。
D/memalloc﹕ /dev/pmem:映射的缓冲区基数:0x52038000大小:8990720偏移量:7454720 fd:67
D/memalloc﹕ /dev/pmem:映射的缓冲区基数:0x5293d000大小:614400偏移量:307200fd:70
D/memalloc﹕ /dev/pmem:映射的缓冲区基数:0x529d3000大小:20766720偏移量:19230720 fd:73
D/memalloc﹕ /dev/pmem:映射的缓冲区基数:0x53ea1000大小:921600偏移量:614400 fd:76
D