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, -1, 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 = 0; 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(100);
        //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 = 0; i <= 100; i++) {
                    dialog.setProgress(i);
                    //休眠200毫秒
                    SystemClock.sleep(200);
                }
                dialog.dismiss();
            }
        }.start();
    }
}