详解Android中提示对话框（ProgressDialog和DatePickerDialog和TimePickerDialog&PopupWindow）

package com.example.test3;
import android.app.Activity;
import android.app.ProgressDialog;
import android.content.Context;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.view.View;
import android.widget.Button;
public class MainActivity extends Activity implements View.OnClickListener{
  private Button btn_one;
  private Button btn_two;
  private Button btn_three;
  private ProgressDialog pd1 = null;
  private ProgressDialog pd2 = null;
  private final static int MAXVALUE = 100;
  private int progressStart = 0;
  private int add = 0;
  private Context mCOntext= null;
  //定义一个用于更新进度的Handler,因为只能由主线程更新界面,所以要用Handler传递信息
  final Handler hand = new Handler()
  {
    @Override
    public void handleMessage(Message msg) {
      //这里的话如果接受到信息码是123
      if(msg.what == 123)
      {
        //设置进度条的当前值
        pd2.setProgress(progressStart);
      }
      //如果当前大于或等于进度条的最大值,调用dismiss()方法关闭对话框
      if(progressStart >= MAXVALUE)
      {
        pd2.dismiss();
      }
    }
  };
  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    mCOntext= MainActivity.this;
    bindViews();
  }
  private void bindViews() {
    btn_One= (Button) findViewById(R.id.btn1);
    btn_two = (Button) findViewById(R.id.btn2);
    btn_three = (Button) findViewById(R.id.btn3);
    btn_one.setOnClickListener(this);
    btn_two.setOnClickListener(this);
    btn_three.setOnClickListener(this);
  }
  @Override
  public void onClick(View v) {
    switch (v.getId()){
      case R.id.btn1:
        //这里的话参数依次为,上下文,标题,内容,是否显示进度,是否可以用取消按钮关闭
        ProgressDialog.show(MainActivity.this, "资源加载中", "资源加载中,请稍后...",false,true);
        break;
      case R.id.btn2:
        pd1 = new ProgressDialog(mContext);
        //依次设置标题,内容,是否用取消按钮关闭,是否显示进度
        pd1.setTitle("软件更新中");
        pd1.setMessage("软件正在更新中,请稍后...");
        pd1.setCancelable(true);
        //这里是设置进度条的风格,HORIZONTAL是水平进度条,SPINNER是圆形进度条
        pd1.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);
        pd1.setIndeterminate(true);
        //调用show()方法将ProgressDialog显示出来
        pd1.show();
        break;
      case R.id.btn3:
        //初始化属性
        progressStart = 0;
        add = 0;
        //依次设置一些属性
        pd2 = new ProgressDialog(MainActivity.this);
        pd2.setMax(MAXVALUE);
        pd2.setTitle("文件读取中");
        pd2.setMessage("文件加载中,请稍后...");
        //这里设置为不可以通过按取消按钮关闭进度条
        pd2.setCancelable(false);
        pd2.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);
        //这里设置的是是否显示进度,设为false才是显示的哦！
        pd2.setIndeterminate(false);
        pd2.show();
        //这里的话新建一个线程,重写run()方法,
        new Thread()
        {
          public void run()
          {
            while(progressStart 

public class MainActivity extends AppCompatActivity implements View.OnClickListener{
  private Button btn_date;
  private Button btn_time;
  private String result = "";
  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    bindViews();
  }
  private void bindViews() {
    btn_date = (Button) findViewById(R.id.btn_date);
    btn_time = (Button) findViewById(R.id.btn_time);
    btn_date.setOnClickListener(this);
    btn_time.setOnClickListener(this);
  }
  @Override
  public void onClick(View v) {
    result = "";
    switch (v.getId()){
      case R.id.btn_date:
        Calendar cale1 = Calendar.getInstance();
        new DatePickerDialog(MainActivity.this,new DatePickerDialog.OnDateSetListener() {
          @Override
          public void onDateSet(DatePicker view, int year, int monthOfYear,
                     int dayOfMonth) {
            //这里获取到的月份需要加上1哦~
            result += "你选择的是"+year+"年"+(monthOfYear+1)+"月"+dayOfMonth+"日";
            Toast.makeText(getApplicationContext(), result, Toast.LENGTH_SHORT).show();
          }
        }
            ,cale1.get(Calendar.YEAR)
            ,cale1.get(Calendar.MONTH)
            ,cale1.get(Calendar.DAY_OF_MONTH)).show();
        break;
      case R.id.btn_time:
        Calendar cale2 = Calendar.getInstance();
        new TimePickerDialog(MainActivity.this, new TimePickerDialog.OnTimeSetListener() {
          @Override
          public void onTimeSet(TimePicker view, int hourOfDay, int minute) {
            result = "";
            result += "您选择的时间是:"+hourOfDay+"时"+minute+"分";
            Toast.makeText(getApplicationContext(), result, Toast.LENGTH_SHORT).show();
          }
        }, cale2.get(Calendar.HOUR_OF_DAY), cale2.get(Calendar.MINUTE), true).show();
        break;
    }
  }
}

public PopupWindow (Context context)
public PopupWindow(View contentView, int width, int height)
public PopupWindow(View contentView)
public PopupWindow(View contentView, int width, int height, boolean focusable)

public class MainActivity extends Activity {
  private Button btn_show;
  private Context mContext;
  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    mCOntext= MainActivity.this;
    btn_show = (Button) findViewById(R.id.btn_show);
    btn_show.setOnClickListener(new View.OnClickListener() {
      @Override
      public void onClick(View v) {
        initPopWindow(v);
      }
    });
  }
  private void initPopWindow(View v) {
    View view = LayoutInflater.from(mContext).inflate(R.layout.item_popup, null, false);
    Button btn_xixi = (Button) view.findViewById(R.id.btn_xixi);
    Button btn_hehe = (Button) view.findViewById(R.id.btn_hehe);
    //1.构造一个PopupWindow，参数依次是加载的View，宽高
    final PopupWindow popWindow = new PopupWindow(view,
        ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.WRAP_CONTENT, true);
    popWindow.setAnimationStyle(R.anim.anim_pop); //设置加载动画
    //这些为了点击非PopupWindow区域，PopupWindow会消失的，如果没有下面的
    //代码的话，你会发现，当你把PopupWindow显示出来了，无论你按多少次后退键
    //PopupWindow并不会关闭，而且退不出程序，加上下述代码可以解决这个问题
    popWindow.setTouchable(true);
    popWindow.setTouchInterceptor(new View.OnTouchListener() {
      @Override
      public boolean onTouch(View v, MotionEvent event) {
        return false;
        // 这里如果返回true的话，touch事件将被拦截
        // 拦截后 PopupWindow的onTouchEvent不被调用，这样点击外部区域无法dismiss
      }
    });
    popWindow.setBackgroundDrawable(new ColorDrawable(0x00000000));  //要为popWindow设置一个背景才有效
    //设置popupWindow显示的位置，参数依次是参照View，x轴的偏移量，y轴的偏移量
    popWindow.showAsDropDown(v, 50, 0);
    //设置popupWindow里的按钮的事件
    btn_xixi.setOnClickListener(new View.OnClickListener() {
      @Override
      public void onClick(View v) {
        Toast.makeText(MainActivity.this, "你点击了嘻嘻~", Toast.LENGTH_SHORT).show();
      }
    });
    btn_hehe.setOnClickListener(new View.OnClickListener() {
      @Override
      public void onClick(View v) {
        Toast.makeText(MainActivity.this, "你点击了呵呵~", Toast.LENGTH_SHORT).show();
        popWindow.dismiss();
      }
    });
  }
}