ProgressDialog 进度条的初步认识

public class MainActivity extends Activity implements View.OnClickListener{
    private ProgressBar progress;
    private Button add;
    private Button reduce;
    private Button reset;
    private Button show;
    private TextView text;
    private ProgressDialog prodig;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        //注册控件
        init();

        add.setOnClickListener(this);
        reduce.setOnClickListener(this);
        reset.setOnClickListener(this);
        show.setOnClickListener(this);
    }

    private void init() {
        progress = (ProgressBar)findViewById(R.id.progressBar);
        add       = (Button) findViewById(R.id.button1);
        reduce   =  (Button) findViewById(R.id.button2);
        reset   =(Button)findViewById(R.id.button3);
        text    =(TextView)findViewById(R.id.textView);
        show    =(Button)findViewById(R.id.show);

        //获取进度
        int first =  progress.getProgress();
        int second=  progress.getSecondaryProgress();
        int Max   =  progress.getMax();

        text.setText("第一进度条百分比：" + ((int) (first / (float) Max * 100)) + "第二进度条百分比为:" + ((int) (second / (float) Max * 100)));
    }
    @Override
    public void onClick(View v) {
        switch (v.getId()){
            case  R.id.button1:
                progress.incrementProgressBy(10);
                progress.incrementSecondaryProgressBy(10);
                break;
            case  R.id.button2:
                progress.incrementProgressBy(-10);
                progress.incrementSecondaryProgressBy(-10);
                break;
            case  R.id.button3:
                progress.setProgress(0);
                progress.setSecondaryProgress(10);
                break;
            case R.id.show:
                //新建ProgressDialog对象
                prodig = new ProgressDialog(MainActivity.this);

                //设置ProgressDialog显示风格
                prodig.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);

                //设置ProgressDialog标题
                prodig.setTitle("慕尼黑");

                //设置ProgressDialog文本信息
                prodig.setMessage("欢迎大家支持慕课网!");

                //设置ProgressDialog图标
                prodig.setIcon(R.mipmap.ic_launcher);

                /*
                设置ProgressBar进度条属性
                 */
                //设定最大进度条
                prodig.setMax(100);

                //设定初始化进度
                prodig.incrementProgressBy(50);

                //进度条明确显示进度 设置为ture就会来回滚动 表示在运行
                prodig.setIndeterminate(false);

                /*
                设定一个确定按钮
                 */
                prodig.setButton(DialogInterface.BUTTON_POSITIVE,"确定可好？", new DialogInterface.OnClickListener() {
                    @Override
                    public void onClick(DialogInterface dialog, int which) {
                        Toast.makeText(MainActivity.this,"今天天气萌萌哒",Toast.LENGTH_SHORT).show();
                    }
                });

                //点击ProgressDialog区域来退出
                prodig.setCancelable(true);

                //显示ProgressDialog
                prodig.show();
                break;
        }
        text.setText("第一进度条百分比：" + ((int) (progress.getProgress() / (float) progress.getMax() * 100)) + "第二进度条百分比为:" + ((int) (progress.getSecondaryProgress() / (float) progress.getMax() * 100)));
    }

　　注意：

1.进度条明确显示进度 设置为ture就会来回滚动 表示在运行

prodig.setIndeterminate(false);

prodig.incrementProgressBy(50);

2.ProgressDialog进度条 设置初始值时

在show（）之前 只能用

prodig.incrementProgressBy(50);show()之后才能用prodig.setProgress(50);