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 + "%");
            }

        });
    }
}