android查看网络图片

来源：互联网发布：部落冲突数据大全2017 编辑：程序博客网时间：2024/04/28 02:25

原代码：

package com.smart.net.activity;
import android.app.Activity;
import android.content.Intent;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ImageView;
import android.widget.Toast;
import com.smart.net.utils.NetTool;
public class DataActivity extends Activity {
private EditText imagePathText;
private static final String TAG="DataActivity";
private ImageView imageView;
@Override
public void onCreate(Bundle savedInstanceState) {
  super.onCreate(savedInstanceState);
  setContentView(R.layout.main);
  imagePathText = (EditText) findViewById(R.id.imagepath);
  imageView=(ImageView)findViewById(R.id.imageView);

  //获取我的宝马车图片
  Button button = (Button) findViewById(R.id.button);
  button.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
String path = imagePathText.getText().toString();
try {

   byte[] data=NetTool.getImage(path);
   Bitmap bm=BitmapFactory.decodeByteArray(data, 0, data.length);
   imageView.setImageBitmap(bm);
} catch (Exception e) {
   Log.i(TAG, e.toString());
   Toast.makeText(DataActivity.this, "获得图片失败", 1).show();
}
}
  });

//  获取网页源代码
  Button sinaButton = (Button) findViewById(R.id.sinaButton);
  sinaButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Intent intent=new Intent(DataActivity.this,SinaActivity.class);
startActivity(intent);
}
  });
}
}
方法实现类
package com.smart.net.utils;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FileOutputStream;
import java.io.InputStream;
import java.net.HttpURLConnection;
import java.net.URL;

public class NetTool {
/**
  * 获得url代码数据
  * */

public static String getHtml(String path,String encoding) throws Exception {
  URL url = new URL(path);
  HttpURLConnection conn = (HttpURLConnection) url.openConnection();
  conn.setRequestMethod("GET");
  conn.setConnectTimeout(6 * 1000);
  // 别超过10秒。
  System.out.println(conn.getResponseCode());
  if(conn.getResponseCode()==200){
InputStream inputStream=conn.getInputStream();
byte[] data=readStream(inputStream);
return new String(data,encoding);
  }
  return null;
}

/**
* 获取指定路径，的数据。
*
* **/
public static byte[] getImage(String urlpath) throws Exception {
  URL url = new URL(urlpath);
  HttpURLConnection conn = (HttpURLConnection) url.openConnection();
  conn.setRequestMethod("GET");
  conn.setConnectTimeout(6 * 1000);
  // 别超过10秒。
  if(conn.getResponseCode()==200){
InputStream inputStream=conn.getInputStream();
return readStream(inputStream);
  }
  return null;
}

/**
  * 读取数据
  * 输入流
  *
  * */
public static byte[] readStream(InputStream inStream) throws Exception {
  ByteArrayOutputStream outstream=new ByteArrayOutputStream();
  byte[] buffer=new byte[1024];
  int len=-1;
  while((len=inStream.read(buffer)) !=-1){
outstream.write(buffer, 0, len);
  }
  outstream.close();
  inStream.close();

return outstream.toByteArray();
}
}

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