Android——对话框

 <Button
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="点击触发弹出普通对话框"
        android:onClick="pt_onclick"/>
    <Button
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="点击触发弹出单选对话框"
        android:onClick="danxuanonclick"/>

    <Button
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="点击触发弹出多选对话框"
        android:onClick="duoxuanonclick"/>
    <Button
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="点击触发弹出自定义对话框"
        android:onClick="zdy_onclick"/>
    <Button
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="点击触发弹出自定义旋转进度条对话框"
        android:onClick="jdt_onclick"/>
    <Button
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="点击触发弹出自定义水平进度条对话框"
        android:onClick="jdt1_onclick"/>

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical">
    <ImageView
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:src="@drawable/anniu2"
        android:scaleType="fitXY"/>
    <EditText
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:hint="用户名"
        android:id="@+id/et_username"/>
    <EditText
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:hint="密码"
        android:inputType="textPassword"
        android:id="@+id/et_password"/>

</LinearLayout>

 public void pt_onclick(View view)
    {
        //普通对话框
        //对话框的构建器
        //AlertDialog.Builder ab = new AlertDialog.Builder(this);
       /* ab.setTitle("数据删除");
        ab.setMessage("你确定要删除吗？");
        //负面按钮
        ab.setPositiveButton("取消", null);
        //正面按钮
        ab.setNegativeButton("确定", new DialogInterface.OnClickListener() {
            @Override
            public void onClick(DialogInterface dialog, int which) {

                Toast.makeText(UIActivity2.this, "删除成功", Toast.LENGTH_SHORT).show();

            }
        });
        //显示
        ab.show();*/

        //方法链调用
        new AlertDialog.Builder(this)

                .setTitle("确认保存")
                .setMessage("确定要保存吗？")
                .setPositiveButton("确定", null)
                .setNegativeButton("取消", null)
                .show();
    }

    public void danxuanonclick(View v)
    {
        final String[] str_color = {"红","绿","蓝","灰"};
        new AlertDialog.Builder(this)
                .setTitle("请选择颜色")
                .setSingleChoiceItems(str_color, 0, new DialogInterface.OnClickListener() {
                    @Override
                    public void onClick(DialogInterface dialog, int which) {

                        Toast.makeText(UIActivity2.this, "选中了" + str_color[which], Toast.LENGTH_SHORT).show();

                        //移除
                        //dialog.dismiss();
                    }
                })
                .setNeutralButton("确定", null)
                .show();

    }
    public void duoxuanonclick(View v)
    {
        final String[] str_color = {"红","绿","蓝","灰"};
        final boolean[] bl_sz = {true,true,true,false};
        new AlertDialog.Builder(this)
                .setTitle("请选择颜色")
                .setMultiChoiceItems(str_color, bl_sz, new DialogInterface.OnMultiChoiceClickListener() {
                    @Override
                    public void onClick(DialogInterface dialog, int which, boolean isChecked) {
                        if (isChecked) {
                            Toast.makeText(UIActivity2.this, str_color[which] + "选中了", Toast.LENGTH_SHORT).show();
                        } else {
                            Toast.makeText(UIActivity2.this, str_color[which] + "取消选中了", Toast.LENGTH_SHORT).show();
                        }

                    }
                })
                .setNeutralButton("确定", new DialogInterface.OnClickListener() {
                    @Override
                    public void onClick(DialogInterface dialog, int which) {

                        //遍历数组
                        for (boolean b : bl_sz) {

                            try {
                                Thread.sleep(100);
                            } catch (Exception ex) {

                            }
                            Toast.makeText(UIActivity2.this, "值=" + b, Toast.LENGTH_SHORT).show();

                        }
                    }
                })
                .show();
    }

    public void zdy_onclick(View view)
    {
       //1.获取加载器
        LayoutInflater layoutInflater = getLayoutInflater();
        //2.用加载器加载文件
        final View v_1 = layoutInflater.inflate(R.layout.loginlayout,null);


        new AlertDialog.Builder(this)

                .setView(v_1)
                //.setView(R.layout.loginlayout)
                .setNegativeButton("取消", null)
                .setPositiveButton("登陆", new DialogInterface.OnClickListener() {
                    @Override
                    public void onClick(DialogInterface dialog, int which) {

                        AlertDialog al = (AlertDialog) dialog;


                        //处理数据
                        //EditText et_username = (EditText)v_1.findViewById(R.id.et_username);

                        EditText et_username = (EditText) al.findViewById(R.id.et_username);

                        //Toast.makeText(UIActivity2.this, "用户名="+et_username.getText(), Toast.LENGTH_SHORT).show();

                        String useneme = et_username.getText().toString();

                        EditText et_password = (EditText) al.findViewById(R.id.et_password);
                        String pwd = et_password.getText().toString();

                        if (useneme.equals("wukong") && pwd.equals("123")) {

                            Intent in = new Intent(UIActivity2.this,Activity1.class);

                            startActivity(in);
                        } else
                            Toast.makeText(UIActivity2.this, "用户名" + useneme + "密码" + pwd, Toast.LENGTH_SHORT).show();
                        {

                        }

                    }
                })
                .show();

    }

    //旋转进度条
    public void jdt_onclick(View view)
    {

        final ProgressDialog pd = new ProgressDialog(this);
        pd.setMessage("正在加载请稍后");
        pd.show();

        //创建thread实例  =【重写run方法  启动多线程
        new Thread()
        {
            @Override
            public void run() {
                super.run();
                try
                {
                    Thread.sleep(3000);
                }
                catch (Exception e)
                {

                }

                pd.dismiss();//关闭

            }
        }.start();

    }
    //旋转进度条
    public void jdt1_onclick(View view)
    {

        final ProgressDialog pd = new ProgressDialog(this);
        pd.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);
        pd.setMessage("正在加载请稍后");
        pd.show();

        //创建thread实例  重写run方法  启动多线程
        new Thread()
        {
            @Override
            public void run() {
                super.run();
                for (int i = 0; i <= pd.getMax(); i++) {
                    try {
                        Thread.sleep(100);
                    } catch (Exception e) {

                    }

                    pd.setProgress(i);
                  }

                 pd.dismiss();//关闭

                }

            }.start();

    }