android - 如何在 ImageView 中显示多张图片

Question

我想按 rowwise 显示带有文本的图像。这是我的 xml 文件

并且在 RowItem 类中包含我设置的位图对象

现在我正在使用硬编码的字符串数组，但我想使用 URL 的字符串数组进行设置我使用 httpconnection 从网络中获取这个 url，我还在 andoridManifest.xml 文件中添加了权限

我很困惑我没有得到任何正确的解决方案请帮助我

我引用这个 url 来显示图片 http://theopentutorials.com/tutorials/android/listview/android-custom-listview-with-image-and-text-using-arrayadapter/我想做同样的事情，只使用 url 而不是硬编码图像

 <?xml version="1.0" encoding="utf-8"?>
    <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
        android:layout_width="fill_parent"
        android:layout_height="fill_parent" >
        <ImageView
            android:id="@+id/icon"
            android:layout_width="80dp"
            android:layout_height="80dp"
            android:contentDescription="@string/image"
            android:paddingLeft="10dp"
            android:paddingRight="10dp" />

        <TextView
            android:id="@+id/desc"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_below="@+id/title"
            android:layout_toRightOf="@+id/icon"
            android:paddingLeft="10dp"
            android:paddingTop="20dp"
            android:textColor="#3399FF"
            android:textSize="14dp" />
    </RelativeLayout>

我的 Java 代码

 import java.io.ByteArrayOutputStream;
    import java.io.IOException;
    import java.util.ArrayList;
    import java.util.List;
    import org.apache.http.HttpResponse;
    import org.apache.http.HttpStatus;
    import org.apache.http.StatusLine;
    import org.apache.http.client.ClientProtocolException;
    import org.apache.http.client.HttpClient;
    import org.apache.http.client.methods.HttpGet;
    import org.apache.http.impl.client.DefaultHttpClient;
    import org.json.JSONArray;
    import org.json.JSONException;
    import org.json.JSONObject;
    import android.app.Activity;
    import android.app.ProgressDialog;
    import android.content.Intent;
    import android.os.AsyncTask;
    import android.os.Bundle;
    import android.view.View;
    import android.widget.AdapterView;
    import android.widget.AdapterView.OnItemClickListener;
    import android.widget.ListView;

    public class BdaylistActivity extends Activity implements
            OnItemClickListener {
        private ProgressDialog m_ProgressDialog = null;
         ListView listView;
            List<RowItem> rowItems;



        /** Called when the activity is first created. */
        @Override
        public void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.activity_bdaylist);


            m_ProgressDialog = ProgressDialog.show(this,    
                    "Please wait...", "Retrieving data ...", true);
            new BirthdayTask().execute("https://gdirectoryqa.appspot.com/gDirectory/get_user_profile.htm");


        }

        @Override
        public void onItemClick(AdapterView<?> parent, View view, int position,
                long id) {


            Intent intent = new Intent(this, ProfileViewActivity.class);
            intent.putExtra("BDay", true);
                   startActivity(intent);
        }


        class BirthdayTask extends AsyncTask<String, String, String>{

            @Override
            protected String doInBackground(String... uri) {
                HttpClient httpclient = new DefaultHttpClient();
                HttpResponse response;
                String responseString = null;
                try {
                    response = httpclient.execute(new HttpGet(uri[0]));
                    StatusLine statusLine = response.getStatusLine();
                    if(statusLine.getStatusCode() == HttpStatus.SC_OK){
                        ByteArrayOutputStream out = new ByteArrayOutputStream();
                        response.getEntity().writeTo(out);
                        out.close();
                        responseString = out.toString();
                    } else{
                        //Closes the connection.
                        response.getEntity().getContent().close();
                        throw new IOException(statusLine.getReasonPhrase());
                    }
                } catch (ClientProtocolException e) {
                    //TODO Handle problems..
                } catch (Exception e) {
                    e.printStackTrace();
                }
                return responseString;
            }


            @Override
            protected void onPostExecute(String result) {
                super.onPostExecute(result);

                JSONArray jArr;
                ArrayList<String> firstLastNames=new ArrayList<String>();
                ArrayList<Integer> images=new ArrayList<Integer>();
                try {
                    jArr = new JSONArray(result);
                    for (int count = 0; count < jArr.length(); count++) {
                        JSONObject obj = jArr.getJSONObject(count);
                        JSONObject userGeneralInfoArray = jArr.getJSONObject(count).getJSONObject("userGeneralInfo"); 
                        firstLastNames.add(userGeneralInfoArray.getString("firstName")+" "+userGeneralInfoArray.getString("lastName"));
                        images.add(R.drawable.ic_launcher);
                    }

                    System.out.println("firstName="+firstLastNames);
                    rowItems = new ArrayList<RowItem>();

                    if(firstLastNames.size() == 0){
                        firstLastNames.add("No Results");
                        images.add(1);
                    }
                    String[] images=new String[]{"http://lh6.ggpht.com/K9UV3dTXSNPk9bGvshrOPPwIl7ExDUEpG2SzdOv8tGBqX4QFpyLRWgvFiyjZ29LNfrBMQPiTVdy14b7eOrodWsLNJDl4zGQ","http://lh6.ggpht.com/K9UV3dTXSNPk9bGvshrOPPwIl7ExDUEpG2SzdOv8tGBqX4QFpyLRWgvFiyjZ29LNfrBMQPiTVdy14b7eOrodWsLNJDl4zGQ","http://theopentutorials.com/wp-content/uploads/totlogo.png"};
                    for (int i = 0; i < firstLastNames.size(); i++) {
                        RowItem item = new RowItem(images.get(i), null, firstLastNames.get(i));
                        rowItems.add(item);
                    }

                    listView = (ListView) findViewById(R.id.list);
                    CustomListViewAdapter adapter = new CustomListViewAdapter(BdaylistActivity.this,
                            R.layout.list_item, rowItems);
                    listView.setAdapter(adapter);
                    listView.setOnItemClickListener(BdaylistActivity.this);
                    m_ProgressDialog.dismiss();

                } catch (JSONException e) {
                    e.printStackTrace();
                }



            }

        }


    }

Answer 1

希望这可能有所帮助。

每当我想从互联网上获取图像并将其显示在我的 android 应用程序中时，我总是使用“Aquery”

https://code.google.com/p/android-query/

它速度快、易于使用，而且只需要很少的代码就可以实现奇迹。 :-)