alterdiolog1

private void setAialog() {
    //创建一个AlertDialog
    AlertDialog.Builder builder = new AlertDialog.Builder(SettingActivity.this);
    //设置标题
    builder.setTitle("退出提示");
    //设置内容
    builder.setMessage("退出登录后，你将不能再接单，发单了！");
    //设置按钮
    builder.setPositiveButton("确认退出",
            new DialogInterface.OnClickListener() {

                @Override
                public void onClick(DialogInterface dialog, int which) {
                    spf.edit().putBoolean("login",false).commit();
                    spf.edit().putString("name",null).commit();
                    startActivity(new Intent(SettingActivity.this,MainActivity.class));
                    System.exit(0);
                }
            });
    //设置按钮
    builder.setNegativeButton("取消退出", new DialogInterface.OnClickListener() {

        @Override
        public void onClick(DialogInterface dialog, int which) {

        }
    });
    AlertDialog dialog = builder.create();
    //显示出来
    dialog.show();
}