Java 使用毕加索在GridView中显示图像
我想通过使用毕加索库构建一个在gridview中显示图像的应用程序。这是我的密码。图像未加载。在毕加索日志中,请求后加载总是错误的。你能帮我吗?谢谢 更新 JavaJava 使用毕加索在GridView中显示图像,java,android,gridview,picasso,Java,Android,Gridview,Picasso,我想通过使用毕加索库构建一个在gridview中显示图像的应用程序。这是我的密码。图像未加载。在毕加索日志中,请求后加载总是错误的。你能帮我吗?谢谢 更新 Java import android.app.Activity; import android.content.ClipData; import android.content.Context; import android.view.LayoutInflater; import android.view.View; import andr
import android.app.Activity;
import android.content.ClipData;
import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.ImageView;
import android.widget.TextView;
import com.squareup.picasso.Picasso;
import java.util.ArrayList;
/**
* Created by Nicky-PC on 4/9/2016.
*/
public class CustomGridViewAdapter extends ArrayAdapter<gridItem> {
Context context;
int layoutResourceId;
ArrayList<gridItem> data = new ArrayList<gridItem>();
public CustomGridViewAdapter(Context context, int layoutResourceId,
ArrayList<gridItem> data) {
super(context, layoutResourceId, data);
this.layoutResourceId = layoutResourceId;
this.context = context;
this.data = data;
}
public void setGridData(ArrayList<gridItem> mGridData)
{
this.data=mGridData;
notifyDataSetChanged();
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
View row = convertView;
RecordHolder holder;
if (row == null) {
LayoutInflater inflater = ((Activity) context).getLayoutInflater();
row = inflater.inflate(layoutResourceId, parent, false);
holder = new RecordHolder();
holder.txtTitle = (TextView) row.findViewById(R.id.tvItem);
holder.imageItem = (ImageView) row.findViewById(R.id.imageView);
row.setTag(holder);
} else {
holder = (RecordHolder) row.getTag();
}
gridItem item = data.get(position);
holder.txtTitle.setText(item.getBarang());
Picasso.with(context).
load(item.getImageUrl()).
into(holder.imageItem);
return row;
}
static class RecordHolder {
TextView txtTitle;
ImageView imageItem;
}
}
导入android.app.Activity;
导入android.content.ClipData;
导入android.content.Context;
导入android.view.LayoutInflater;
导入android.view.view;
导入android.view.ViewGroup;
导入android.widget.ArrayAdapter;
导入android.widget.ImageView;
导入android.widget.TextView;
导入com.squareup.picasso.picasso;
导入java.util.ArrayList;
/**
*由Nicky PC于2016年4月9日创建。
*/
公共类CustomGridViewAdapter扩展了ArrayAdapter{
语境;
国际布局资源;
ArrayList数据=新的ArrayList();
公共CustomGridViewAdapter(上下文上下文,int-layoutResourceId,
ArrayList数据){
超级(上下文、布局资源ID、数据);
this.layoutResourceId=layoutResourceId;
this.context=上下文;
这个数据=数据;
}
公共void setGridData(ArrayList mGridData)
{
this.data=mGridData;
notifyDataSetChanged();
}
@凌驾
公共视图getView(int位置、视图转换视图、视图组父视图){
视图行=转换视图;
记录持有者;
if(行==null){
LayoutInflater充气器=((活动)上下文)。getLayoutInflater();
行=充气机。充气(layoutResourceId,父级,false);
holder=新记录持有者();
holder.txtTitle=(TextView)row.findViewById(R.id.tviItem);
holder.imageItem=(ImageView)row.findViewById(R.id.ImageView);
row.setTag(支架);
}否则{
holder=(RecordHolder)row.getTag();
}
gridItem项=data.get(位置);
holder.txtTitle.setText(item.getBarang());
毕加索。与(上下文)。
加载(item.getImageUrl())。
进入(持有人、项目);
返回行;
}
静态类记录保持器{
TextView-txtTitle;
图像查看图像项;
}
}
MainActivity.Java
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import android.app.Activity;
import android.media.Image;
import android.os.AsyncTask;
import android.os.Bundle;
import android.support.v7.app.ActionBarActivity;
import android.util.Log;
import android.widget.GridView;
import android.widget.ImageView;
import android.widget.ListAdapter;
import android.widget.ListView;
import android.widget.SimpleAdapter;
import android.widget.Toast;
import com.squareup.picasso.Picasso;
import org.apache.http.NameValuePair;
import org.apache.http.message.BasicNameValuePair;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
public class MainActivity extends ActionBarActivity {
JSONParser jParser= new JSONParser();
ArrayList<HashMap<String, String>> nameList;
JSONArray names=null;
GridView data;
private static final String URL_TEST_BARANG= "http://lomapod.azurewebsites.net/readBarang.php";
private static final String TAG_PESAN = "message";
private static final String TAG_HASIL = "result";
private static final String TAG_BARANG = "nama_barang";
private static final String TAG_IMAGE= "image_name";
ImageView imageview;
CustomGridViewAdapter mGridAdapter;
ArrayList<gridItem> mGridData;
public MainActivity()
{}
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
data=(GridView) findViewById(R.id.lvSeller);
nameList= new ArrayList<HashMap<String, String>>();
imageview =(ImageView) findViewById(R.id.imageView);
mGridData=new ArrayList<>();
mGridAdapter=new CustomGridViewAdapter(this,R.layout.grid_item,mGridData);
new AmbilDataJson("1").execute();
}
public class AmbilDataJson extends AsyncTask<String,String,String> {
String id;
int sukses=0;
public AmbilDataJson(String id) {
this.id=id;
}
@Override
protected void onPreExecute() {
super.onPreExecute();
}
@Override
protected String doInBackground(String... args) {
List<NameValuePair> params = new ArrayList<NameValuePair>();
params.add(new BasicNameValuePair("id_penjual",id));
try
{
JSONObject json = jParser.makeHttpRequest(URL_TEST_BARANG, "GET", params);
gridItem item=null;
if(json != null)
{
sukses = json.getInt(TAG_PESAN);
if(sukses == 0)
{
nameList = new ArrayList<HashMap<String,String>>();
Log.d("Semua Nama: ", json.toString());
names = json.getJSONArray(TAG_HASIL);
for(int i = 0; i < names.length();i++)
{
JSONObject c = names.getJSONObject(i);
String barang = c.getString(TAG_BARANG);
String image = "lomapod.esy.es/assets/"+c.getString(TAG_IMAGE);
item = new gridItem();
item.setBarang(barang);
item.setImageUrl(image);
HashMap<String,String> map = new HashMap<String,String>();
map.put(TAG_BARANG,barang);
map.put(TAG_IMAGE,image);
nameList.add(map);
mGridData.add(item);
}
}
}
}catch(JSONException e)
{
e.printStackTrace();
}
return null;
}
@Override
protected void onPostExecute(String s) {
if(sukses == 0)
{
CustomGridViewAdapter adapter = new CustomGridViewAdapter(
MainActivity.this,R.layout.grid_item,mGridData);
if(mGridData.size()>0)
{
mGridAdapter.setGridData(mGridData);
data.setAdapter(adapter);
}
else
Toast.makeText(getApplicationContext(),"Error - No Data Available", Toast.LENGTH_SHORT).show();
}
else
{
Toast.makeText(MainActivity.this,"Failed",Toast.LENGTH_LONG);
}
}
}
}
import java.util.ArrayList;
导入java.util.HashMap;
导入java.util.List;
导入android.app.Activity;
导入android.media.Image;
导入android.os.AsyncTask;
导入android.os.Bundle;
导入android.support.v7.app.ActionBarActivity;
导入android.util.Log;
导入android.widget.GridView;
导入android.widget.ImageView;
导入android.widget.ListAdapter;
导入android.widget.ListView;
导入android.widget.simpledapter;
导入android.widget.Toast;
导入com.squareup.picasso.picasso;
导入org.apache.http.NameValuePair;
导入org.apache.http.message.BasicNameValuePair;
导入org.json.JSONArray;
导入org.json.JSONException;
导入org.json.JSONObject;
公共类MainActivity扩展了ActionBarActivity{
JSONParser jParser=新的JSONParser();
ArrayList名称列表;
JSONArray name=null;
网格视图数据;
私有静态最终字符串URL\u TEST\u BARANG=”http://lomapod.azurewebsites.net/readBarang.php";
私有静态最终字符串标记_PESAN=“message”;
私有静态最终字符串标记_HASIL=“result”;
私有静态最终字符串标记_BARANG=“nama_BARANG”;
私有静态最终字符串TAG\u IMAGE=“IMAGE\u name”;
图像视图图像视图;
CustomGridViewAdapter mGridAdapter;
ArrayList mGridData;
公共活动()
{}
@凌驾
创建时的公共void(Bundle savedInstanceState){
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
数据=(GridView)findViewById(R.id.lvSeller);
名称列表=新的ArrayList();
imageview=(imageview)findViewById(R.id.imageview);
mGridData=newarraylist();
mGridAdapter=新的CustomGridViewAdapter(此,R.layout.grid_项,mGridData);
新的AmbilDataJson(“1”).execute();
}
公共类AmbilDataJson扩展异步任务{
字符串id;
int-sukses=0;
公共AmbilDataJson(字符串id){
这个.id=id;
}
@凌驾
受保护的void onPreExecute(){
super.onPreExecute();
}
@凌驾
受保护的字符串doInBackground(字符串…args){
List params=new ArrayList();
参数add(新的BasicNameValuePair(“id_penjual”,id));
尝试
{
JSONObject json=jParser.makeHttpRequest(URL_TEST_BARANG,“GET”,params);
gridItem=null;
if(json!=null)
{
sukses=json.getInt(TAG_PESAN);
if(sukses==0)
{
名称列表=新的ArrayList();
Log.d(“Semua Nama:,json.toString());
name=json.getJSONArray(TAG_HASIL);
对于(int i=0;iCustomGridViewAdapter adapter = new CustomGridViewAdapter(
MainActivity.this,R.layout.grid_item,mGridData);
mGridAdapter.setGridData(mGridData);
data.setAdapter(adapter);
`@Override
protected void onPostExecute(String s) {
if(sukses == 0)
{
CustomGridViewAdapter adapter = new CustomGridViewAdapter(
MainActivity.this,R.layout.grid_item,mGridData);
if(mGridData.size()>0)
{
mGridAdapter.setGridData(mGridData);
data.setAdapter(adapter);
}
else
Toast.makeText(getApplicationContext(),"Error - No Data Available", Toast.LENGTH_SHORT).show();
}`
CustomGridViewAdapter adapter = new CustomGridViewAdapter(MainActivity.this,R.layout.grid_item, nameList);
data.setAdapter(adapter);
//you don't even need to call mGridAdapter.setGridData(mGridData) method.
public CustomGridViewAdapter(Context context, int layoutResourceId,
ArrayList<HashMap<String, String>> nameList) {
....
}