安卓新的联网方式 Volley的使用（一）加载图片与 json

public void readBitmapViaVolley(String imgUrl, final ImageView imageView) {
		ImageRequest imgRequest = new ImageRequest(imgUrl,
				new Response.Listener<Bitmap>() {
					@Override
					public void onResponse(Bitmap arg0) {
						// TODO Auto-generated method stub
						imageView.setImageBitmap(arg0);
					}
				},   //紫色代码 表示  联网成功后的回调
				300, 
				200, 
				Config.ARGB_8888, 
				new ErrorListener() {
					@Override
					public void onErrorResponse(VolleyError arg0) {
						
					}
				});  //联网失败后 的回调。
		mQueue.add(imgRequest); //添加到mQueue中，完成绑定。

 }

public void getWeatherInfo(){
	JsonObjectRequest jsonObjectRequest = new JsonObjectRequest(WEATHER_LINK, null, 
			new Response.Listener<JSONObject>() {
				@Override
				public void onResponse(JSONObject arg0) {
					list.clear();
					Iterator<String> it = arg0.keys();
					while(it.hasNext()){
						String key = it.next();
						JSONObject obj = null;
						try {
							 obj = arg0.getJSONObject(key);
						} catch (JSONException e) {
							// TODO Auto-generated catch block
							e.printStackTrace();
						}
						if (obj != null) {
							Iterator<String> objIt = obj.keys();
							while (objIt.hasNext()) {
								String objKey = objIt.next();
								String objValue;
								try {
								objValue = obj.getString(objKey);
								HashMap<String, String> map = new HashMap<String, String>();
								map.put("title", objKey);
								map.put("content", objValue);
								Log.v(TAG, "title = " + objKey + " | content = " + objValue);
								list.add(map);
								} catch (JSONException e) {
									// TODO Auto-generated catch block
									e.printStackTrace();
								}
							}
						}
					}
					Log.v(TAG, "list.size = " + list.size());
				}			
			}, new Response.ErrorListener() {
				@Override
				public void onErrorResponse(VolleyError arg0) {
				}
			});
	mQueue.add(jsonObjectRequest);