ProgressDialog的简单应用

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package com.example.keen.progressdialog;import android.app.ProgressDialog;import android.os.Handler;import android.os.Message;import android.support.v7.app.AppCompatActivity;import android.os.Bundle;import android.view.View;import android.widget.Button;public class MainActivity extends AppCompatActivity {    private Button button;    private ProgressDialog pd;    Handler handler = new Handler(){        @Override        public void handleMessage(Message msg) {            //super.handleMessage(msg);            pd.dismiss();        }    };    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        button = (Button)findViewById(R.id.bartest);        button.setOnClickListener(new View.OnClickListener() {            @Override            public void onClick(View v) {                pd = ProgressDialog.show(MainActivity.this, "标题", "加载中，请稍后...");                pd.setCancelable(false);                pd.setCanceledOnTouchOutside(true); //设置点击外面可以被取消                //开启一个新线程,在新线程中执行耗时的方法                new Thread(new Runnable() {                    @Override                    public void run() {                        spandTimeMethod();                        handler.sendEmptyMessage(0);                    }                }).start();            }        });    }    private void spandTimeMethod(){        try{            Thread.sleep(10000);        }catch (InterruptedException e){            e.printStackTrace();        }    }}
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