Android常用的Dialog对话框用法

Android的版本有很多通常开发的时候对话框大多数使用自定义或是 Google提供的V4，

V7 兼容包来开发保持各个版本的对话框样式统一，所以这里使用的是V7 包里的AlertDialog。

 import android.app.ProgressDialog;
 import android.content.DialogInterface;
 import android.os.Bundle;
 import android.os.SystemClock;
 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);
     }

     /**
      * 普通对话框
      *
      * @param view
      */
     public void click1(View view) {
         AlertDialog.Builder builder = new AlertDialog.Builder(this);
         //设置标题
         builder.setTitle("用户安全提示:");
         //设置提示消息
         builder.setMessage("你确定接受用户隐私条款吗?");
         builder.setPositiveButton("确定", null);
         builder.setNegativeButton("取消", null);
         //显示dialog
         builder.show();
     }

     /**
      * 单选对话框
      *
      * @param view
      */
     public void click2(View view) {
         AlertDialog.Builder builder = new AlertDialog.Builder(this);
         //设置标题
         builder.setTitle("选择一项你的专业:");
         //设置要显示的item条目
         final String items[] = {"Java", "C++", "PHP", "Android", "C#", "Python", "MySql"};
         //设置item点击事件
         builder.setSingleChoiceItems(items, -, new DialogInterface.OnClickListener() {
             @Override
             public void onClick(DialogInterface dialog, int which) {
                 Toast.makeText(MainActivity.this, "你选择了:" + items[which], Toast.LENGTH_SHORT).show();
                 dialog.dismiss();
             }
         });
         //显示dialog
         builder.show();
     }

     /**
      * 多选对话框
      *
      * @param view
      */
     public void click3(View view) {
         AlertDialog.Builder builder = new AlertDialog.Builder(this);
         //设置标题
         builder.setTitle("选择你的兴趣爱好:");
         //设置要显示的item条目
         final String items[] = {"看书", "玩游戏", "看电影", "打球", "健身", "自驾游", "去酒吧"};
         //设置每个条目的选择状态 false为没有选中 true为选中
         final boolean[] checks = {true, true, false, false, false, false, false};
         //设置item点击事件 条目被选中时 修改checks里的boolean值
         builder.setMultiChoiceItems(items, checks, new DialogInterface.OnMultiChoiceClickListener() {
             @Override
             public void onClick(DialogInterface dialog, int which, boolean isChecked) {
                 checks[which] = isChecked;
             }
         });
         //设置确定按钮点击事件
         builder.setPositiveButton("确定", new DialogInterface.OnClickListener() {
             @Override
             public void onClick(DialogInterface dialog, int which) {
                 StringBuffer buffer = new StringBuffer();
                 for (int i = ; i < checks.length; i++) {
                     if (checks[i]) {
                         buffer.append(items[i] + ",");
                     }
                 }
                 Toast.makeText(MainActivity.this, buffer.toString(), Toast.LENGTH_SHORT).show();
             }
         });
         builder.setNegativeButton("取消", null);
         //显示dialog
         builder.show();
     }

     /**
      * 进度条对话框
      *
      * @param view
      */
     public void click4(View view) {
         final ProgressDialog dialog = new ProgressDialog(this);
         dialog.setTitle("请稍等:");
         //dialog.setMessage("正在努力加载...");
         //dialog.show();

         //以下的属性不设置 进度条样式默认为圆形

         //设置进度最大值为100
         dialog.setMax();
         //设置进度条样式为水平
         dialog.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);

         dialog.show();
         //模拟一个进度加载过程
         new Thread() {
             @Override
             public void run() {
                 for (int i = ; i <= ; i++) {
                     dialog.setProgress(i);
                     //休眠200毫秒
                     SystemClock.sleep();
                 }
                 dialog.dismiss();
             }
         }.start();
     }
 }