查看网络图片
2015-07-03 14:55
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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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