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在我的列表視圖中顯示了textview，但我很難實現imageview。我想在文字前放置相同的圖標圖像。請幫忙 ！！如何將ImageView實現到列表視圖行
//Fun.java
import java.io.BufferedReader;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.util.ArrayList;
import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.NameValuePair;
import org.apache.http.client.HttpClient;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.entity.StringEntity;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.params.BasicHttpParams;
import org.apache.http.params.HttpConnectionParams;
import org.apache.http.params.HttpParams;
import org.apache.http.protocol.HTTP;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
import android.app.Activity;
import android.widget.TextView;
import android.app.ProgressDialog;
import android.content.Intent;
import android.graphics.Color;
import android.net.ParseException;
import android.os.AsyncTask;
import android.os.Bundle;
import android.view.View;
import android.view.Window;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.ListView;
import android.widget.Toast;
public class Fun extends Activity{
JSONArray jArray;
String result = null;
InputStream is = null;
StringBuilder sb = null;
ArrayList<String> al = new ArrayList<String>();
String targetmonth;
int responseCode;
int listItemCount=0;
ListView listview ;
// --> public static int [] prgmImages={R.drawable.ic};
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
listview = (ListView) findViewById(R.id.listView1);
// --> listview.setAdapter(new DataAdapter(Fun.this, prgmImages));
new LoadData().execute();
// listening to single list item on click
listview.setOnItemClickListener(new OnItemClickListener() {
public void onItemClick(AdapterView<?> parent, View view,
int position, long id) {
// selected item
String product = ((TextView) view.findViewById(R.id.targetmonth)).getText().toString();
// Launching new Activity on selecting single List Item
Intent i = new Intent(getApplicationContext(), SingleListItem.class);
// sending data to new activity
i.putExtra("product", product);
startActivity(i);
}
});
}
private class LoadData extends AsyncTask<Void, Void, Void> {
private ProgressDialog progressDialog;
@Override
// can use UI thread here
protected void onPreExecute() {
this.progressDialog = ProgressDialog.show(Fun.this, ""," Can you just see your roof...");
}
@Override
protected void onPostExecute(final Void unused) {
try{
listview.setAdapter(new DataAdapter(Fun.this,al.toArray(new String[al.size()])));
this.progressDialog.dismiss();
}
catch(Exception e){
Toast.makeText(getApplicationContext(), e.toString(), Toast.LENGTH_LONG).show();
}
}
@Override
protected Void doInBackground(Void... params) {
// TODO Auto-generated method stub
// HTTP post
try {
ArrayList<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>();
HttpClient httpclient = new DefaultHttpClient();
try{
HttpPost httppost = new HttpPost("http://10.0.0.1/app/ap.php");
StringEntity se = new StringEntity("envelope",HTTP.UTF_8);
httppost.setEntity(se);
HttpParams httpParameters = new BasicHttpParams();
// Set the timeout in milliseconds until a connection is established.
int timeoutConnection = 3000;
HttpConnectionParams.setConnectionTimeout(httpParameters, timeoutConnection);
// Set the default socket timeout (SO_TIMEOUT)
// in milliseconds which is the timeout for waiting for data.
int timeoutSocket = 3000;
HttpConnectionParams.setSoTimeout(httpParameters, timeoutSocket);
httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs));
HttpResponse response = httpclient.execute(httppost);
HttpEntity entity = response.getEntity();
is = entity.getContent();
}
catch(Exception e){
Toast.makeText(getApplicationContext(), e.toString(), Toast.LENGTH_LONG).show();
}
//buffered reader
try{
BufferedReader reader = new BufferedReader(new InputStreamReader(
is, "iso-8859-1"), 80);
sb = new StringBuilder();
sb.append(reader.readLine() + "\n");
String line = "0";
while ((line = reader.readLine()) != null) {
sb.append(line + "\n");
}
is.close();
result = sb.toString();
System.out.println("Magu data aagaya"+result);
}
catch(Exception e){
Toast.makeText(getApplicationContext(), e.toString(), Toast.LENGTH_LONG).show();
}
try{
jArray = new JSONArray(result);
JSONObject json_data = null;
for (int i = 0; i < jArray.length(); i++) {
json_data = jArray.getJSONObject(i);
targetmonth=json_data.getString("targetmonth");
al.add(targetmonth);
}
}
catch(JSONException e){
Toast.makeText(getApplicationContext(), e.toString(), Toast.LENGTH_LONG).show();
}
} catch (ParseException e) {
// Log.e("log_tag", "Error in http connection" + e.toString());
Toast.makeText(getApplicationContext(), e.toString(), Toast.LENGTH_LONG).show();
}
catch (Exception e) {
// Log.e("log_tag", "Error in http connection" + e.toString());
Toast.makeText(getApplicationContext(), e.toString(), Toast.LENGTH_LONG).show();
}
return null;
}
}
}
// DataAdapter的
import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.ImageView;
import android.widget.TextView;
public class DataAdapter extends BaseAdapter {
Context mContext;
private LayoutInflater mInflater;
String targetmonth;
String img;
//String targetamount;
String[] month;
//String[] year;
//String[] amount;
public DataAdapter(Context c, String[] month) {
this.month = month;
//this.year = year;
//this.amount = amount;
mContext = c;
mInflater = LayoutInflater.from(c);
}
public int getCount() {
return month.length;
}
public Object getItem(int position) {
return position;
}
public long getItemId(int position) {
return position;
}
public View getView(int position, View convertView, ViewGroup parent) {
ViewHolder holder = null;
if (convertView == null) {
convertView = mInflater.inflate(R.layout.customgrid, parent, false);
holder = new ViewHolder();
holder.month = (TextView) convertView
.findViewById(R.id.targetmonth);
holder.img = (ImageView) convertView.findViewById(R.id.image_id);
// holder.amount = (TextView) convertView.findViewById(R.id.targetamount);
if (position == 0) {
convertView.setTag(holder);
}
} else {
holder = (ViewHolder) convertView.getTag();
}
try {
holder.month.setText(month[position]);
// holder.img.setImageResource(img[position]);
// holder.amount.setText(amount[position]);
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return convertView;
}
static class ViewHolder {
TextView month;
ImageView img;
// TextView year, amount;
}
}
//Customgrid.xml用於格式化的TextView和ImageView的
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical">
<TableLayout android:id="@+id/TableLayout01"
android:layout_height="wrap_content"
android:layout_width="fill_parent">
<TableRow android:id="@+id/TableRow01"
android:layout_height="wrap_content"
android:layout_width="wrap_content">
</TableRow>
<LinearLayout
android:layout_height="wrap_content"
android:layout_width="match_parent" android:id="@+id/linearLayout1" android:weightSum="1">
<ImageView
android:id="@+id/image_id"
android:layout_gravity="center"
android:layout_width="48dp"
android:layout_height="48dp"
android:src="@drawable/ic" />
<TextView
android:layout_width="wrap_content"
android:text="hello"
android:layout_height="wrap_content"
android:id="@+id/targetmonth"
android:textSize="15sp"
android:textStyle="italic"
android:paddingBottom="5sp"
android:paddingRight="5sp"
android:paddingTop="5sp"
android:layout_gravity="left"
android:layout_weight="0.32"
android:gravity="left|center"
android:paddingLeft="10sp"
android:textColor="#ffc844">
</TextView>
</LinearLayout>
</TableLayout>
</LinearLayout>
//主.xml - listview xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical">
<TableLayout android:id="@+id/TableLayout01"
android:layout_height="wrap_content"
android:layout_width="fill_parent">
<TableRow android:id="@+id/TableRow01"
android:layout_height="wrap_content"
android:layout_width="wrap_content">
</TableRow>
<LinearLayout
android:layout_height="wrap_content"
android:layout_width="match_parent" android:id="@+id/linearLayout1" android:weightSum="1">
<ImageView
android:id="@+id/image_id"
android:layout_gravity="center"
android:layout_width="48dp"
android:layout_height="48dp"
android:src="@drawable/ic" />
<TextView
android:layout_width="wrap_content"
android:text="hello"
android:layout_height="wrap_content"
android:id="@+id/targetmonth"
android:textSize="15sp"
android:textStyle="italic"
android:paddingBottom="5sp"
android:paddingRight="5sp"
android:paddingTop="5sp"
android:layout_gravity="left"
android:layout_weight="0.32"
android:gravity="left|center"
android:paddingLeft="10sp"
android:textColor="#ffc844">
</TextView>
</LinearLayout>
</TableLayout>
</LinearLayout>
我不會走線槽所有的代碼，以便請解釋你的問題是什麼，發生了什麼或沒有發生。 –
看到我想在我的列表活動中看到imageview和textview活動 在Fun.java textview是從MySQL服務器中提取的，但我想要將常量imageview圖標放在textview的左側。 我該怎麼做？ –