ProgressDialog水平进度条

findViewById(R.id.btn).setOnClickListener(new OnClickListener() {

            @Override
            public void onClick(View v) {
                final ProgressDialog pro = new ProgressDialog(MainActivity.this);
                pro.setTitle("搜索网络");
                pro.setMessage("请耐心等待");
                //设置最大值
                pro.setMax(max_pro);
                //设置初始值
                pro.setProgress(50);
                //设置样式
                pro.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);
                pro.setButton("后台处理",new DialogInterface.OnClickListener() {

                    @Override
                    public void onClick(DialogInterface dialog, int which) {
                        pro.dismiss();

                    }
                });
                //启动进度条
                pro.onStart();
                new Thread(){
                    public void run() {
                        for (int i = 0; i < max_pro; i++) {
                            try {
                                Thread.sleep(100);
                            } catch (InterruptedException e) {
                                // TODO Auto-generated catch block
                                e.printStackTrace();
                            }
                            //设置每次增加的度
                            pro.incrementProgressBy(i);

                        }
                        pro.dismiss();
                    };
                }.start();
                pro.show();

            }
        });