本文共 1758 字,大约阅读时间需要 5 分钟。
packagecom.lucky.test51url;importandroid.annotation.SuppressLint;importandroid.graphics.Bitmap;importandroid.graphics.BitmapFactory;importandroid.os.Handler;importandroid.os.Message;importandroid.support.v7.app.AppCompatActivity;importandroid.os.Bundle;importandroid.view.View;importandroid.widget.Button;importandroid.widget.ImageView;importjava.io.IOException;importjava.io.InputStream;importjava.net.MalformedURLException;importjava.net.URL;importjava.net.URLConnection;public class MainActivity extendsAppCompatActivity {
Button button1;
ImageView imageView1;
Bitmap bitmap1;
String pathString="https://ss0.bdstatic.com/94oJfD_bAAcT8t7mm9GUKT-xh_/timg?image&quality=100&size=b4000_4000&sec=1552803802&di=e730996ff6ab40c6102de6cab6d6ab52&src=http://img4.duitang.com/uploads/item/201406/28/20140628082503_HcGBS.jpeg";
@SuppressLint("HandlerLeak")
Handler handler=new Handler(){ //利用hander接收线程中发送的数据,并在UI界面中显示出来
@Overridepublic voidhandleMessage(Message msg) {if(msg.what==0x01){
imageView1.setImageBitmap(bitmap1);
}
}
};
@Overrideprotected voidonCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
button1=findViewById(R.id.button);
imageView1=findViewById(R.id.imageView);
button1.setOnClickListener(newView.OnClickListener() {
@Overridepublic voidonClick(View v) {//开辟一个新的线程
newThread(){
@Overridepublic voidrun() {try{//利用URL访问网络
URL url=newURL(pathString);
URLConnection connection=url.openConnection();//获得网络连接
InputStream inputStream=connection.getInputStream();//利用connection的输入流访问网络
bitmap1=BitmapFactory.decodeStream(inputStream);
handler.sendEmptyMessage(0x01);
}catch(MalformedURLException e) {
e.printStackTrace();
}catch(IOException e) {
e.printStackTrace();
}
}
}.start();
}
});
}
}
转载地址:https://blog.csdn.net/weixin_33510225/article/details/114785961 如侵犯您的版权,请留言回复原文章的地址,我们会给您删除此文章,给您带来不便请您谅解!