这是我的json文件和代码我想在我的imageview和text视图中打印3个json值 如何在我的imageciew和textview中设置json值？请帮助我在我的代码中有三个属性名称和url如何将其设置为树imageview和textview ???
{
"worldpopulation": [
{
"rank":1,
"name": "BREAKFAST",
"url": "http://niel986.files.wordpress.com/2012/07/fast-food.jpg"
},
{
"rank":2,
"name": "LUNCH ",
"url": "http://www.bubblews.com/assets/images/news/1107772406_1370520219.gif"
},
{
"rank":3,
"name": "SUPPER",
"url": "http://2.bp.blogspot.com/_JU_j7jj5TjU/TSBQKRukf1I/AAAAAAAAAs8/X1w5_z6pjwQ
/s1600/chicken-biryani.jpg"
}
]
}
代码：
ImageView img1 = (ImageView) findViewById(R.id.img1);
TextView txt1 = (TextView)findViewById(R.id.txt1);
ImageView img2 = (ImageView) findViewById(R.id.img2);
TextView txt2 = (TextView)findViewById(R.id.txt2);
ImageView img3 = (ImageView) findViewById(R.id.img3);
TextView txt3 = (TextView)findViewById(R.id.txt3);
MenuSelect = Utils.MenuSelect;
try {
HttpClient client = new DefaultHttpClient();
HttpConnectionParams.setConnectionTimeout(client.getParams(),
15000);
HttpConnectionParams.setSoTimeout(client.getParams(), 15000);
HttpUriRequest request = new HttpGet(MenuSelect);
HttpResponse response = client.execute(request);
InputStream atomInputStream = response.getEntity().getContent();
BufferedReader in = new BufferedReader(new
InputStreamReader(atomInputStream));
String line;
String str = "";
while ((line = in.readLine()) != null){
str += line;
}
JSONObject json = new JSONObject(str);
JSONArray data = json.getJSONArray("worldpopulation");
JSONObject e = data.getJSONObject(i);
String Name=e.getString("name");
String url2=e.getString("url");
txt1.setText(Name);
Bitmap bitmap =
BitmapFactory.decodeStream((InputStream)new URL(url2).getContent());
img1.setImageBitmap(bitmap);
} catch (MalformedURLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
// IOConnect = 1;
e.printStackTrace();
} catch (JSONException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
答案 0 :(得分：1)
1) MainActivity
public class MainActivity extends Activity {
LazyAdapter adapter;
ArrayList<AtmData> mAtmData;
AtmData POIitem1;
ListView list;
Button btn;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
list = (ListView)findViewById(R.id.list);
btn = (Button)findViewById(R.id.buttt);
btn.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
// TODO Auto-generated method stub
Intent ii = new Intent(MainActivity.this,GoogleMap.class);
startActivity(ii);
}
});
POIitem1 = new AtmData();
Thread mUpdateThread1 = new Thread() {
public void run() {
Connnn _con = new Connnn();
try {
mAtmData = _con.getAtmData(
MainActivity.this,
"https://maps.googleapis.com/maps/api/place/search/json?location=30.7046486,76.71787259999999&radius=1000&types=food&sensor=false&key=AIzaSyAx8BKq8WTUzke6jnL1n4TqSvS5xHH5HFE");
Log.d("", "url" + mAtmData);
// Log.d("", "url"
// + "https://maps.googleapis.com/maps/api/place/search/json?location=30.7046486,76.71787259999999&radius=1000&types=atm&sensor=false&key=AIzaSyAx8BKq8WTUzke6jnL1n4TqSvS5xHH5HFE");
} catch (ClientProtocolException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
// Log.d("sizeeeeeeeeeeeeeeeeeeeee",""+mLocationInfo.size());
MainActivity.this.handle.sendEmptyMessage(1);
};
};
mUpdateThread1.start();
}
Handler handle = new Handler(){
public void handleMessage(android.os.Message msg) {
switch(msg.what)
{
case 1:
Log.d("murlllllllll","murllllllllllll"+ mAtmData);
for(int i=0;i<mAtmData.size();i++){
Log.d("murlllllllll","murllllllllllll"+ mAtmData.get(i).mlag);
Log.d("lnggggggggg","lnnnnnnnnnnnnggggg"+mAtmData.get(i).mlat);
Log.d("lconnnnnnn","iconnnnnnnnnnnnnnnnnnnnnn"+mAtmData.get(i).micon);
}
adapter = new LazyAdapter(MainActivity.this, mAtmData);
list.setAdapter(adapter);
Log.d("lsit","listttttttttt"+list);
};
};
};
}
2)LAzy Class..
public class LazyAdapter extends BaseAdapter {
private static LayoutInflater inflater=null;
MainActivity mainActivity;
ArrayList<AtmData> data;
ImageLoader imageLoader;
public LazyAdapter(MainActivity a, ArrayList<AtmData> data) {
// TODO Auto-generated constructor stub
mainActivity = a;
this.data=data;
inflater = (LayoutInflater)mainActivity.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
imageLoader=new ImageLoader(mainActivity.getApplicationContext());
}
@Override
public int getCount() {
// TODO Auto-generated method stub
return data.size();
}
@Override
public Object getItem(int position) {
// TODO Auto-generated method stub
return position;
}
@Override
public long getItemId(int position) {
// TODO Auto-generated method stub
return position;
}
class AtmData2{
public TextView title1,artist,adress;
public ImageView _image;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
// TODO Auto-generated method stub
AtmData2 mAtmData2;
View vi=convertView;
if(convertView==null)
{
mAtmData2=new AtmData2();
convertView = inflater.inflate(R.layout.list_row, null);
mAtmData2.title1 = (TextView) convertView.findViewById(R.id.title);
mAtmData2._image = (ImageView) convertView.findViewById(R.id.imageView1nnnnnnnnnnnn);
mAtmData2.artist = (TextView) convertView.findViewById(R.id.artist); // artist name
mAtmData2.adress = (TextView) convertView.findViewById(R.id.duration); // duration
convertView.setTag(mAtmData2);
} else {
mAtmData2 = (AtmData2)convertView.getTag();
}
mAtmData2.title1.setText(data.get(position).mname);
mAtmData2.artist.setText(data.get(position).mtypes);
String _imgurl = this.data.get(position).micon.replaceAll(" ","%20");
mAtmData2.adress.setText(data.get(position).mvicinity);
mAtmData2._image.setTag(_imgurl);
imageLoader.DisplayImage(_imgurl,mainActivity, mAtmData2._image);
return convertView;
}
}
3) ImageLoader class;
public class ImageLoader {
MemoryCache memoryCache=new MemoryCache();
FileCache fileCache;
private Map<ImageView, String> imageViews=Collections.synchronizedMap(new WeakHashMap<ImageView, String>());
ExecutorService executorService;
public ImageLoader(Context context){
fileCache=new FileCache(context);
executorService=Executors.newFixedThreadPool(5);
}
final int stub_id = R.drawable.no_image;
public void DisplayImage(String url, ImageView imageView)
{
imageViews.put(imageView, url);
Bitmap bitmap=memoryCache.get(url);
if(bitmap!=null)
imageView.setImageBitmap(bitmap);
else
{
queuePhoto(url, imageView);
imageView.setImageResource(stub_id);
}
}
private void queuePhoto(String url, ImageView imageView)
{
PhotoToLoad p=new PhotoToLoad(url, imageView);
executorService.submit(new PhotosLoader(p));
}
private Bitmap getBitmap(String url)
{
File f=fileCache.getFile(url);
//from SD cache
Bitmap b = decodeFile(f);
if(b!=null)
return b;
//from web
try {
Bitmap bitmap=null;
URL imageUrl = new URL(url);
HttpURLConnection conn = (HttpURLConnection)imageUrl.openConnection();
conn.setConnectTimeout(30000);
conn.setReadTimeout(30000);
conn.setInstanceFollowRedirects(true);
InputStream is=conn.getInputStream();
OutputStream os = new FileOutputStream(f);
Utils.CopyStream(is, os);
os.close();
bitmap = decodeFile(f);
return bitmap;
} catch (Exception ex){
ex.printStackTrace();
return null;
}
}
//decodes image and scales it to reduce memory consumption
private Bitmap decodeFile(File f){
try {
//decode image size
BitmapFactory.Options o = new BitmapFactory.Options();
o.inJustDecodeBounds = true;
BitmapFactory.decodeStream(new FileInputStream(f),null,o);
//Find the correct scale value. It should be the power of 2.
final int REQUIRED_SIZE=70;
int width_tmp=o.outWidth, height_tmp=o.outHeight;
int scale=1;
while(true){
if(width_tmp/2<REQUIRED_SIZE || height_tmp/2<REQUIRED_SIZE)
break;
width_tmp/=2;
height_tmp/=2;
scale*=2;
}
//decode with inSampleSize
BitmapFactory.Options o2 = new BitmapFactory.Options();
o2.inSampleSize=scale;
return BitmapFactory.decodeStream(new FileInputStream(f), null, o2);
} catch (FileNotFoundException e) {}
return null;
}
//Task for the queue
private class PhotoToLoad
{
public String url;
public ImageView imageView;
public PhotoToLoad(String u, ImageView i){
url=u;
imageView=i;
}
}
class PhotosLoader implements Runnable {
PhotoToLoad photoToLoad;
PhotosLoader(PhotoToLoad photoToLoad){
this.photoToLoad=photoToLoad;
}
@Override
public void run() {
if(imageViewReused(photoToLoad))
return;
Bitmap bmp=getBitmap(photoToLoad.url);
memoryCache.put(photoToLoad.url, bmp);
if(imageViewReused(photoToLoad))
return;
BitmapDisplayer bd=new BitmapDisplayer(bmp, photoToLoad);
Activity a=(Activity)photoToLoad.imageView.getContext();
a.runOnUiThread(bd);
}
}
boolean imageViewReused(PhotoToLoad photoToLoad){
String tag=imageViews.get(photoToLoad.imageView);
if(tag==null || !tag.equals(photoToLoad.url))
return true;
return false;
}
//Used to display bitmap in the UI thread
class BitmapDisplayer implements Runnable
{
Bitmap bitmap;
PhotoToLoad photoToLoad;
public BitmapDisplayer(Bitmap b, PhotoToLoad p){bitmap=b;photoToLoad=p;}
public void run()
{
if(imageViewReused(photoToLoad))
return;
if(bitmap!=null)
photoToLoad.imageView.setImageBitmap(bitmap);
else
photoToLoad.imageView.setImageResource(stub_id);
}
}
public void clearCache() {
memoryCache.clear();
fileCache.clear();
}
public void DisplayImage(String _imgurl, MainActivity mainActivity,
Object _image) {
// TODO Auto-generated method stub
}
}
试试这个可能会有所帮助。我正在为我工作。