Android开发之xUtils-HttpUtils的使用

使用xUtils框架中的网络部分HttpUtils，功能：下载，断点续传，progressbar显示进度，文本显示进度%

 import java.io.File;

 import android.app.Activity;
 import android.os.Bundle;
 import android.os.Environment;
 import android.view.View;
 import android.widget.ProgressBar;
 import android.widget.TextView;
 import android.widget.Toast;

 import com.lidroid.xutils.HttpUtils;
 import com.lidroid.xutils.exception.HttpException;
 import com.lidroid.xutils.http.ResponseInfo;
 import com.lidroid.xutils.http.callback.RequestCallBack;

 public class MainActivity extends Activity {
     private ProgressBar pb;
     private TextView tv_error;
     private TextView tv_progress;

     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.activity_main);
         pb = (ProgressBar) findViewById(R.id.pb);
         tv_progress = (TextView) findViewById(R.id.tv_progress);
         tv_error = (TextView) findViewById(R.id.tv_error);

     }

     public void click(View v) {
         String fileName = "bcompare.exe";
         String path = "http://192.168.1.40:8080/" + fileName;
         HttpUtils http = new HttpUtils();
         http.download(path, Environment.getExternalStorageDirectory() + "/"
                 + fileName, true, true, new RequestCallBack<File>() {

             @Override
             public void onSuccess(ResponseInfo<File> arg0) {
                 Toast.makeText(MainActivity.this, arg0.result.getPath(), 0)
                         .show();
             }

             @Override
             public void onFailure(HttpException arg0, String arg1) {
                 tv_error.setText(arg1);
             }

             @Override
             public void onLoading(long total, long current, boolean isUploading) {
                 super.onLoading(total, current, isUploading);
                 pb.setMax((int) total);
                 pb.setProgress((int) current);
                 tv_progress.setText(current * 100 / total + "%");
             }

         });
     }
 }