Dialog对话框的几种方式使用实现

package com.loaderman.dialogdemo;

import android.app.ProgressDialog;
import android.content.DialogInterface;
import android.os.Bundle;
import android.support.v7.app.AlertDialog;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.widget.Toast;

public class MainActivity extends AppCompatActivity {
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
    }
    /**
     * 提示对话框
     */
    public void normal(View v) {
        AlertDialog.Builder builder = new AlertDialog.Builder(this);
        //设置标题
        builder.setTitle("对话框标题");
        //设置内容
        builder.setMessage("我是对话框信息");
        //显示确定按钮
        builder.setPositiveButton("确定", new DialogInterface.OnClickListener() {
            //点击确定按钮后调用
            @Override
            public void onClick(DialogInterface dialog, int which) {
                Toast.makeText(MainActivity.this, "已确定", Toast.LENGTH_SHORT).show();
            }
        });
        //显示取消按钮
        builder.setNegativeButton("取消", new DialogInterface.OnClickListener() {
            //取消
            @Override
            public void onClick(DialogInterface dialog, int which) {
                Toast.makeText(MainActivity.this, "已取消", Toast.LENGTH_SHORT).show();
            }
        });
        builder.show();
    }
    /**
     * 进度条对话框
     */
    public void progress(View view) {
        final ProgressDialog pd = new ProgressDialog(this);
        //设置标题
        pd.setTitle("进度条对话框");
        //设置最大值
        pd.setMax(100);
        //设置进度条的样式
        pd.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);
        new Thread() {
            public void run() {
                try {
                    for (int i = 1; i < 101; i++) {
                        sleep(100);
                        //设置进度条的进度
                        pd.setProgress(i);
                    }
                    //让进度条对话框消失
                    pd.dismiss();
                } catch (InterruptedException e) {
                    e.printStackTrace();
                }
            }
        }.start();
        //设置内容
        //    pd.setMessage("玩命下载中...");
        pd.show();
    }
　　//列表单选对话框
    public void single1(View view) {
        final String[] items = {"java", ".net", "php"};
        new AlertDialog.Builder(MainActivity.this).setTitle("选择语言")
                .setItems(items, new DialogInterface.OnClickListener() {
                    public void onClick(DialogInterface dialog, int item) {
                        Toast.makeText(getApplicationContext(), items[item], Toast.LENGTH_SHORT).show();
                    }
                }).show();//显示对话框
    }
　　//列表带框的单选对话框
    public void single2(View view) {
        final String[] items = {"java", ".net", "php"};
        new AlertDialog.Builder(MainActivity.this).setTitle("选择语言")
                .setSingleChoiceItems(items, 1, new DialogInterface.OnClickListener() {
                    public void onClick(DialogInterface dialog, int item) {
                        Toast.makeText(getApplicationContext(), items[item], Toast.LENGTH_SHORT).show();
                        dialog.cancel();
                    }
                }).show();//显示对话框
    }
　　//多选复选框
    public void more(View view) {
        final String[] items = {"java", ".net", "php"};
        new AlertDialog.Builder(MainActivity.this).setCancelable(false)
                .setTitle("选择语言")
                .setMultiChoiceItems(items, new boolean[]{false, true, false}, new DialogInterface.OnMultiChoiceClickListener() {
                    @Override
                    public void onClick(DialogInterface dialog, int which, boolean isChecked) {
                        if (isChecked) {
                            Toast.makeText(getApplicationContext(), items[which], Toast.LENGTH_SHORT).show();
                        }
                    }
                }) //选项复选框
                .setPositiveButton("确认",
                        new DialogInterface.OnClickListener() {
                            public void onClick(DialogInterface dialoginterface, int i) {
                                dialoginterface.dismiss();
                            }
                        }) //确认按钮
                .show(); //显示对话框
    }
}

activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/activity_main"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:orientation="vertical"
    tools:context="com.loaderman.dialogdemo.MainActivity">

    <Button
        android:onClick="normal"
        android:layout_width="match_parent"
        android:text="提示对话框"
        android:layout_height="wrap_content"/>
    <Button
        android:onClick="progress"
        android:layout_width="match_parent"
        android:text="进度对话框"
        android:layout_height="wrap_content"/>
    <Button
        android:onClick="single1"
        android:layout_width="match_parent"
        android:text="列表对话框"
        android:layout_height="wrap_content"/>
    <Button
        android:onClick="single2"
        android:layout_width="match_parent"
        android:text="单选带框的对话框"
        android:layout_height="wrap_content"/>
    <Button
        android:onClick="more"
        android:layout_width="match_parent"
        android:text=" 多选对话框"
        android:layout_height="wrap_content"/>
</LinearLayout>

效果图:

---

Context是Activity的父类
父类有的方法, 子类一定有,
子类有的方法,父类不一定有
当show一个Dialog时, 必须传Activity对象, 否则会出异常android.view.WindowManager$BadTokenException: Unable to add window-token null is
not for an application因为Dialog必须依赖Activity为载体才能展示出来,
所以必须将Activity对象传递进去,以后在使用Context的时候, 尽量传递Activity对象, 这样比较安全