实例介绍
【实例简介】
【实例截图】
【实例截图】
【核心代码】
package com.example.homeworkhttpgetimage;
import java.io.BufferedInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.net.HttpURLConnection;
import java.net.URL;
import java.util.ArrayList;
import java.util.List;
import org.apache.http.HttpResponse;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.impl.client.DefaultHttpClient;
import android.annotation.SuppressLint;
import android.app.Activity;
import android.app.ProgressDialog;
import android.content.ComponentName;
import android.content.Intent;
import android.content.ServiceConnection;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.drawable.BitmapDrawable;
import android.media.ThumbnailUtils;
import android.os.Bundle;
import android.os.Handler;
import android.os.IBinder;
import android.os.Message;
import android.preference.DialogPreference;
import android.provider.Settings.System;
import android.util.DisplayMetrics;
import android.util.Log;
import android.view.ContextMenu;
import android.view.ContextMenu.ContextMenuInfo;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.AdapterView;
import android.widget.AdapterView.AdapterContextMenuInfo;
import android.widget.Button;
import android.widget.EditText;
import android.widget.GridView;
import android.widget.LinearLayout;
import android.widget.Toast;
import com.example.homeworkhttpgetimage.adapter.MyGriadAdapter;
import com.example.homeworkhttpgetimage.bean.DataBean;
import com.example.homeworkhttpgetimage.bean.JsonBean;
import com.example.homeworkhttpgetimage.downloadService.ServiceForDownload;
import com.google.gson.Gson;
@SuppressLint("HandlerLeak")
public class MainActivity extends Activity implements OnClickListener {
Button button_search;
Button button_next;
EditText editText;
private static final int DOWN_ID = 0;
ProgressDialog dialog;
GridView gridView;
List<Bitmap> bitmaps = new ArrayList<Bitmap>();
List<DataBean> beans = new ArrayList<DataBean>();
MyGriadAdapter adapter;
String value = "";
int ab = 0;
LinearLayout layout;
int pag = 0;// 当前显示第几页
String allURL[];
ServiceConnection connection = new ServiceConnection() {
@Override
public void onServiceDisconnected(ComponentName arg0) {
// TODO Auto-generated method stub
}
@Override
public void onServiceConnected(ComponentName arg0, IBinder arg1) {
// TODO Auto-generated method stub
}
};
Handler handler = new Handler(){
@Override
public void handleMessage(Message msg) {
if(msg.what ==0){
adapter = new MyGriadAdapter(bitmaps,MainActivity.this);
gridView.setAdapter(adapter);
dialog.dismiss();
button_search.setClickable(true);
}
};
};
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
setTitle("图片搜索引擎");
button_search = (Button) findViewById(R.id.button1);
button_next = (Button) findViewById(R.id.button_next);
editText = (EditText) findViewById(R.id.editText1);
gridView = (GridView) findViewById(R.id.gridView1);
registerForContextMenu(gridView);
layout = (LinearLayout) findViewById(R.id.layout_home_bottom);
button_next.setOnClickListener(this);
button_search.setOnClickListener(this);
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
@Override
public void onCreateContextMenu(ContextMenu menu, View v,
ContextMenuInfo menuInfo) {
super.onCreateContextMenu(menu, v, menuInfo);
menu.setHeaderTitle("快使用双节棍");
menu.add(0, DOWN_ID, 0, "保存");
}
@Override
public boolean onContextItemSelected(MenuItem item) {
// TODO Auto-generated method stub
AdapterView.AdapterContextMenuInfo info =(AdapterContextMenuInfo) item.getMenuInfo();
if(item.getItemId()==DOWN_ID){
Intent intent = new Intent(this, ServiceForDownload.class);
String downURL = beans.get(info.position).getObjURL().toString();
Log.v("this", "onContextItemSelected 获取的地址：" downURL);
intent.putExtra("key", downURL);
startService(intent);
bindService(intent, connection, 0);
}
return super.onContextItemSelected(item);
}
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
String getText = editText.getText().toString().trim();
if(getText!=""){
value = getText;
Log.v("this", value "---为获取的值----");
}else{
Toast.makeText(this, "不能为空！", Toast.LENGTH_SHORT).show();
}
if(v == button_search){
button_search.setClickable(false);
dialog = new ProgressDialog(this);
// dialog.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);
dialog.setMessage("正在努力加载中···");
dialog.setCancelable(false);
dialog.show();
new Thread(){
public void run() {
String url = "http://image.baidu.com/i?tn=baiduimagejson&ie=utf-8&ic=0&rn=12&pn=1&word=" value;
DefaultHttpClient client = new DefaultHttpClient();
HttpGet get = new HttpGet(url);
try {
HttpResponse response = client.execute(get);
int statusCode = response.getStatusLine().getStatusCode();
if(statusCode == 200){
String getUrl = getURL(response);
Gson gson = new Gson();
JsonBean bean =gson.fromJson(getUrl, JsonBean.class);
allURL = new String[bean.getData().size()];
beans= bean.getData();
for(int i = 0 ; i<beans.size()-1;i ){
Log.v("this", i "-----" beans.get(i).getObjURL());
getBitmap1(beans.get(i).getObjURL());
}
Log.v("this", "执行handler----1--设置adapter");
handler.obtainMessage(0).sendToTarget();
}else{
}
} catch (Exception e) {
// TODO Auto-generated catch block
Log.e("this","onclick " e);
e.printStackTrace();
}
};
}.start();
layout.setVisibility(View.VISIBLE);
}else if(v == button_next){
pag ;
new Thread(){
public void run() {
String url = "http://image.baidu.com/i?tn=baiduimagejson&ie=utf-8&ic=" pag "&rn=12&pn=1&word=" value;
DefaultHttpClient client = new DefaultHttpClient();
HttpGet get = new HttpGet(url);
try {
HttpResponse response = client.execute(get);
int statusCode = response.getStatusLine().getStatusCode();
if(statusCode == 200){
String getUrl = getURL(response);
Gson gson = new Gson();
JsonBean bean =gson.fromJson(getUrl, JsonBean.class);
allURL = new String[bean.getData().size()];
beans= bean.getData();
for(int i = 0 ; i<beans.size()-1;i ){
Log.v("this", i "-----" beans.get(i).getObjURL());
getBitmap1(beans.get(i).getObjURL());
}
Log.v("this", "执行handler----1--设置adapter");
handler.obtainMessage(0).sendToTarget();
}else{
}
} catch (Exception e) {
// TODO Auto-generated catch block
Log.e("this","onclick " e);
e.printStackTrace();
}
};
}.start();
}
}
public String getURL(HttpResponse response) throws Exception {
InputStream inputStream = response.getEntity().getContent();
byte[] by = new byte[1024];
int len = 0;
ByteArrayOutputStream arrayOutputStream = new ByteArrayOutputStream();
while ((len = inputStream.read(by)) != -1) {
arrayOutputStream.write(by, 0, len);
}
String rs = new String(arrayOutputStream.toByteArray(), "UTF-8");
arrayOutputStream.flush();
arrayOutputStream.close();
inputStream.close();
return rs;
}
public void getBitmap1(String path) {
InputStream in = null;
BufferedInputStream bin = null;
HttpURLConnection connection = null;
DisplayMetrics dm = new DisplayMetrics();
getWindowManager().getDefaultDisplay().getMetrics(dm);
int width = dm.widthPixels;//宽度
int height = dm.heightPixels*84/100 ;//高度
try {
URL url = new URL(path);
connection = (HttpURLConnection) url.openConnection();
connection.setRequestMethod("GET");
connection.setReadTimeout(5000);
connection.setDoInput(true);
// in = connection.getInputStream();
// bin = new BufferedInputStream(in);
// bm = BitmapFactory.decodeStream(bin);
InputStream input = connection.getInputStream();
bin = new BufferedInputStream(input);
BitmapDrawable imageDraw = new BitmapDrawable(bin);
Bitmap bitmap = imageDraw.getBitmap();
bitmap = ThumbnailUtils.extractThumbnail(bitmap, width/3, height/4);
Log.v("this", "成功出--制造bitmap----");
bitmaps.add(bitmap);
} catch (Exception e) {
e.printStackTrace();
Log.e("this", "制造bitmap失败----");
}
finally {
try {
if (in != null) {
in.close();
bin.close();
}
connection.disconnect();
} catch (Exception e) {
}
// return bm;
}
}
public void getBitmap(String path) {
Bitmap bm = null;
InputStream in = null;
BufferedInputStream bin = null;
HttpURLConnection connection = null;
try {
URL url = new URL(path);
connection = (HttpURLConnection) url.openConnection();
connection.setRequestMethod("GET");
connection.setReadTimeout(5000);
connection.setDoInput(true);
in = connection.getInputStream();
bin = new BufferedInputStream(in);
bm = BitmapFactory.decodeStream(bin);
bitmaps.add(bm);
Log.v("this", "成功出--制造bitmap----");
} catch (Exception e) {
e.printStackTrace();
// bitmaps.add(bitmaps.get(1));
Log.e("this", "制造bitmap失败----" e);
}
try {
in.close();
bin.close();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
connection.disconnect();
}
}
标签： 图片
好例子网口号：伸出你的我的手 — 分享！
小贴士
感谢您为本站写下的评论，您的评论对其它用户来说具有重要的参考价值，所以请认真填写。
- 类似“顶”、“沙发”之类没有营养的文字，对勤劳贡献的楼主来说是令人沮丧的反馈信息。
- 相信您也不想看到一排文字/表情墙，所以请不要反馈意义不大的重复字符，也请尽量不要纯表情的回复。
- 提问之前请再仔细看一遍楼主的说明，或许是您遗漏了。
- 请勿到处挖坑绊人、招贴广告。既占空间让人厌烦，又没人会搭理，于人于己都无利。
关于好例子网
本站旨在为广大IT学习爱好者提供一个非营利性互相学习交流分享平台。本站所有资源都可以被免费获取学习研究。本站资源来自网友分享，对搜索内容的合法性不具有预见性、识别性、控制性，仅供学习研究，请务必在下载后24小时内给予删除，不得用于其他任何用途，否则后果自负。基于互联网的特殊性，平台无法对用户传输的作品、信息、内容的权属或合法性、安全性、合规性、真实性、科学性、完整权、有效性等进行实质审查；无论平台是否已进行审查，用户均应自行承担因其传输的作品、信息、内容而可能或已经产生的侵权或权属纠纷等法律责任。本站所有资源不代表本站的观点或立场，基于网友分享，根据中国法律《信息网络传播权保护条例》第二十二与二十三条之规定，若资源存在侵权或相关问题请联系本站客服人员，点此联系我们。关于更多版权及免责申明参见 版权及免责申明
网友评论
我要评论