package cn.zhaoliang5156.consultation1604k.activity;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.net.NetworkInfo;
import android.os.Handler;
import android.os.Message;
import android.os.PersistableBundle;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.widget.ImageView;
import android.widget.TextView;
import java.io.ByteArrayOutputStream;
import java.io.InputStream;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;
import cn.zhaoliang5156.consultation1604k.R;
/**
* 需求:
* 1. 请求https://www.baidu.com/ 地址
* 2. 把响应的数据显示到界面上
*
* @author zhaoliang
* @version 1.0
* @create 2018/8/2
*/
public class MainActivity extends AppCompatActivity {
// 声明控件的地方
private TextView tvResult;
private ImageView ivImage;
// 声明文字和图片的url
private String textUrl = "https://www.baidu.com/";
private String imageUrl = "http://wimg.spriteapp.cn/picture/2018/0416/5ad498b1eabb3_wpd.jpg";
private String imageUrl2 = "http://cms-bucket.nosdn.127.net/2018/08/02/fed2863b5ea64dac92c1d0321bccd1d2.png";
private Handler mHandler = new Handler() {
@Override
public void handleMessage(Message msg) {
/*String result = (String) msg.obj;
tvResult.setText(result);*/
Bitmap bitmap = (Bitmap) msg.obj;
ivImage.setImageBitmap(bitmap);
}
};
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
tvResult = findViewById(R.id.tv_result);
ivImage = findViewById(R.id.iv_image);
new Thread() {
@Override
public void run() {
try {
// 定位到百度地址
// URL url = new URL(textUrl);
URL url = new URL(imageUrl2);
// 打开连接
HttpURLConnection connection = (HttpURLConnection) url.openConnection();
// 设置连接超时
connection.setConnectTimeout(5000);
// 设置读取超时
connection.setReadTimeout(5000);
// 设置请求方法
connection.setRequestMethod("GET");
/*int code = connection.getResponseCode();
if (code == 200) {
}*/
// 读取响应码
if (connection.getResponseCode() == 200) {
/*InputStream inputStream = connection.getInputStream();
ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
int len = -1;
byte[] b = new byte[1024];
while ((len = inputStream.read(b)) != -1) {
outputStream.write(b, 0, len);
}
final String result = new String(outputStream.toByteArray());*/
Bitmap bitmap = BitmapFactory.decodeStream(connection.getInputStream());
/*runOnUiThread(new Runnable() {
@Override
public void run() {
tvResult.setText(result);
}
});*/
/*Message obtain = Message.obtain();
obtain.what = 1;
obtain.obj = result;
mHandler.sendMessage(obtain);*/
// 创建一个图片的Message
Message obtain = Message.obtain();
obtain.what = 1;
obtain.obj = bitmap;
mHandler.sendMessage(obtain);
}
} catch (Exception e) {
e.printStackTrace();
}
}
}.start();
}
}
Client
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