android网络图片查看器简单实现代码

本文实例为大家分享了android网络图片查看器的具体代码，供大家参考，具体内容如下

效果图：

1.输入一个图片url

2.转换成bitmap位图

3.展示到ImageView上

xml：

java代码：

package com.itheima74.internetpicturelook;

import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.widget.EditText;
import android.widget.ImageView;
import android.widget.Toast;

import java.io.IOException;
import java.io.InputStream;
import java.net.HttpURLConnection;
import java.net.URL;

public class MainActivity extends AppCompatActivity {

  private EditText et_url;
  private ImageView iv;

  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    et_url = (EditText) findViewById(R.id.et_url);
    iv = (ImageView) findViewById(R.id.iv);
    findViewById(R.id.bt_look).setonClickListener(new View.onClickListener() {
      @Override
      public void onClick(View v) {
 String path = et_url.getText().toString().trim();
 if (path.isEmpty()) {
   Toast.makeText(MainActivity.this, "请输入图片网址", Toast.LENGTH_SHORT).show();
 } else {
   //开启子线程去网络下载图片
   downLoadPicture(path);
 }
      }

      private void downLoadPicture(final String path) {
 // 子线程请求网络
 new Thread() {
   @Override
   public void run() {
     try {
URL url = new URL(path);
HttpURLConnection connection = (HttpURLConnection) url.openConnection();
connection.setRequestMethod("GET");
connection.setConnectTimeout(5000);
int responseCode = connection.getResponseCode();
if (responseCode == 200) {
  InputStream inputStream = connection.getInputStream();
  final Bitmap bitmap = BitmapFactory.decodeStream(inputStream);
  // 主线程更新UI
  runonUiThread(new Runnable() {
    @Override
    public void run() {
      iv.setImageBitmap(bitmap);
    }
  });
}
     } catch (IOException e) {
e.printStackTrace();
     }
   }
 }.start();
      }
    });
  }

}

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持考高分网。