查看网络图片
2015-07-03 11:52
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<img src="https://img-blog.csdn.net/20150703115506578?watermark/2/text/aHR0cDovL2Jsb2cuY3Nkbi5uZXQvZmVuZ2hhaXlhbl85Mw==/font/5a6L5L2T/fontsize/400/fill/I0JBQkFCMA==/dissolve/70/gravity/SouthEast" alt="" />
1.activity_main <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical" android:paddingBottom="@dimen/activity_vertical_margin" android:paddingLeft="@dimen/activity_horizontal_margin" android:paddingRight="@dimen/activity_horizontal_margin" android:paddingTop="@dimen/activity_vertical_margin" tools:context=".MainActivity" > <ImageView android:id="@+id/ivImage" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_gravity="center" android:layout_weight="1" /> <EditText android:id="@+id/edt" android:layout_width="match_parent" android:layout_height="wrap_content" android:ems="10" android:text="http://cdn.duitang.com/uploads/item/201411/26/20141126202900_ZCXZ5.jpeg"/> <Button android:id="@+id/btnView" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_gravity="center" android:onClick="viewImage" android:text="浏览" /> </LinearLayout> 2.MainActivity package org.bzu.imagebrowser; import java.io.IOException; import java.io.InputStream; import java.net.HttpURLConnection; import java.net.MalformedURLException; import java.net.URL; import java.text.BreakIterator; import android.os.Bundle; import android.os.Handler; import android.os.Message; import android.app.Activity; import android.graphics.Bitmap; import android.graphics.BitmapFactory; import android.text.TextUtils; import android.view.Menu; import android.view.View; import android.widget.Button; import android.widget.EditText; import android.widget.ImageView; import android.widget.Toast; public class MainActivity extends Activity { Button button; ImageView imageView; EditText ed; private static final int MSG_SUCCESS = 0;// 获取图片成功的标识 private static final int MSG_FAILURE = 1;// 获取图片失败的标识 @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); findId(); } public void findId() { button = (Button) findViewById(R.id.btnView); imageView = (ImageView) findViewById(R.id.ivImage); ed = (EditText) findViewById(R.id.edt); } public boolean onCreateOptionsMenu(Menu menu) { // Inflate the menu; this adds items to the action bar if it is present. getMenuInflater().inflate(R.menu.main, menu); return true; } private Handler handler = new Handler(){ public void handleMessage(Message msg) { switch (msg.what) { case MSG_SUCCESS: Bitmap bit = (Bitmap) msg.obj; imageView.setImageBitmap(bit); break; default: break; } }; }; public void viewImage(View view) { final String path = ed.getText().toString();//获取输入的图片路径 if (TextUtils.isEmpty(path)) { Toast.makeText(MainActivity.this, " 路径不为空", Toast.LENGTH_SHORT) .show(); } else { new Thread() { public void run() { URL url; try { url = new URL(path);//发出请求 HttpURLConnection connection = (HttpURLConnection) url .openConnection(); connection.setRequestMethod("GET");//设置请求方式这里的方式必须为大写 connection.setConnectTimeout(5000);//设置超时的时间 int code = connection.getResponseCode();//获得状态码 if (code == 200) { InputStream is = connection.getInputStream(); Bitmap bitmap = BitmapFactory.decodeStream(is);//写入一个bitmap流 Message m = new Message(); m.what = MSG_SUCCESS; m.obj = bitmap; handler.sendMessage(m); } else { Toast.makeText(MainActivity.this, "打开失败", Toast.LENGTH_SHORT).show(); } } catch (MalformedURLException e) { // TODO Auto-generated catch block e.printStackTrace(); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } }; }.start(); } } }
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