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我是Android和PHP的新手。我已成功將圖像URI從Android上傳到MySQL，現在遇到麻煩以獲取圖像URI並在listView活動A上顯示。任何幫助將不勝感激。非常感謝。從MySQL獲取URL圖像並顯示在android listView（setImageURI）
MySQL的
發送到MySQL：
我發送圖像uri到服務器，並且圖像路徑存儲MySQL，圖像保存在文件夾PhotoUpload 。
@Override
protected String doInBackground(String... params) {
for (int index = 0; index < jsonArray.length(); index++) {
try {
JSONObject jsonObject = jsonArray.getJSONObject(index);
String strUri = jsonObject.getString("image");
HashMap<String, String> data = new HashMap<String, String>();
data.put(Configs.KEY_IMAGE, getStringImage(Uri.parse(strUri)));
RequestHandler rh = new RequestHandler();
String result = rh.sendPostRequest(Configs.SEND, data);
return result;
} catch (Exception e) {
}
}
return "";
}
@Override
protected void onPostExecute(String s) {
super.onPostExecute(s);
loading.dismiss();
Toast.makeText(getApplicationContext(), s, Toast.LENGTH_LONG).show();
}
public String getStringImage(Uri imgUri) {
try {
Bitmap bitmap = MediaStore.Images.Media.getBitmap(getContentResolver(), imgUri);
ByteArrayOutputStream baos = new ByteArrayOutputStream();
bitmap.compress(Bitmap.CompressFormat.JPEG, 100, baos);
byte[] imageBytes = baos.toByteArray();
String encodedImage = Base64.encodeToString(imageBytes, Base64.DEFAULT);
return encodedImage;
} catch (Exception e) {
}
return "";
}
而現在我想從獲取的MySQL和url顯示圖像爲listView，但圖像不能被檢索出來，只有字符串可以檢索。
從服務器中檢索：
public void BuildEditStaffList(final String id) {
class GetDataJSON extends AsyncTask<String, Void, String> {
@Override
protected String doInBackground(String... params) {
DefaultHttpClient httpclient = new DefaultHttpClient(new BasicHttpParams());
HttpPost httppost = new HttpPost("http://192.168.107.115/Android/CRUD/staffRetrieve.php?id=" + id);
// Depends on your web service
httppost.setHeader("Content-type", "application/json");
InputStream inputStream = null;
String result = null;
try {
HttpResponse response = httpclient.execute(httppost);
HttpEntity entity = response.getEntity();
inputStream = entity.getContent();
// json is UTF-8 by default
BufferedReader reader = new BufferedReader(new InputStreamReader(inputStream, "UTF-8"), 8);
StringBuilder sb = new StringBuilder();
String line = null;
while ((line = reader.readLine()) != null) {
sb.append(line + "\n");
}
result = sb.toString();
} catch (Exception e) {
// Oops
} finally {
try {
if (inputStream != null) inputStream.close();
} catch (Exception squish) {
}
}
return result;
}
@Override
protected void onPostExecute(String result) {
myJSON = result;
showList();
}
}
GetDataJSON g = new GetDataJSON();
g.execute();
}
protected void showList() {
try {
JSONObject jsonObj = new JSONObject(myJSON);
details = jsonObj.getJSONArray(Configs.TAG_RESULTS);
for (int i = 0; i < details.length(); i++) {
JSONObject c = details.getJSONObject(i);
String type = c.getString(Configs.TAG_TYPE);
String description = c.getString(Configs.TAG_DESCRIPTION);
String amount = c.getString(Configs.TAG_AMOUNT);
String image = c.getString(Configs.TAG_IMAGE);
int ID = c.getInt(Configs.TAG_ID);
Staff staff = new Staff(ID, type, description, amount, image);
staffs.add(staff);
}
CVAdapter adapter = new CVAdapter(getActivity(), staffs);
listViewEdit.setAdapter(adapter);
} catch (JSONException e) {
e.printStackTrace();
}
}
CVAdapter：
public class CVAdapter extends ArrayAdapter<Staff> {
Activity context;
List<Staff> staffs;
static class ViewHolder {
public ImageView image;
public TextView type;
public TextView amount;
public TextView description;
}
@Override
public int getCount() {
return staffs.size();
}
public CVAdapter(Activity context, List<Staff> staffs) {
super(context, R.layout.retrieve_staff, staffs);
this.context = context;
this.staffs = staffs;
}
@Override
public Staff getItem(int position) {
return null;
}
@Override
public long getItemId(int position) {
return 0;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
ViewHolder holder;
if(convertView==null){
ViewHolder v = new ViewHolder();
LayoutInflater inflater = context.getLayoutInflater();
convertView = inflater.inflate(R.layout.retrieve_staff, null);
v.image = (ImageView)convertView.findViewById(R.id.image);
v.amount = (TextView)convertView.findViewById(R.id.amount);
v.type = (TextView)convertView.findViewById(R.id.type);
v.description = (TextView)convertView.findViewById(R.id.description);
convertView.setTag(v);
}
holder = (ViewHolder)convertView.getTag();
Log.v("TEST", staffs.get(position).getImage());
holder.image.setImageURI(Uri.parse(staffs.get(position).getImage()));
holder.amount.setText(staffs.get(position).getAmount());
holder.type.setText(staffs.get(position).getType());
holder.description.setText(staffs.get(position).getDescription());
return convertView;
}
}
RetrieveImageAndText.php
<?php
define('HOST','127.0.0.1:3307');
define('USER','root');
define('PASS','');
define('DB','androiddb');
$con = mysqli_connect(HOST,USER,PASS,DB) or die('unable to connect');
$tws = $_GET['id'];
$sql = "select * from staff_benefit WHERE ts_id= '". $tws."' ";
$res = mysqli_query($con,$sql);
$result=array();
while($row=mysqli_fetch_array($res)){
array_push($result,array('id'=>$row[0],'type'=>$row[1],'amount'=>$row[2],'description'=>$row[3],'image'=>$row[4],
'ts_id'=>$row[5]));
}
echo (json_encode(array("result"=>$result)));
mysqli_close($con);
?>
輸出
請參閱此鏈接....... htt p：//www.androidhive.info/2012/02/android-custom-listview-with-image-and-text/ –
@IndraKumarS他從MySQL獲取數據？ – Tony
你可以發佈你的JSON響應 –