android实例笔记--对话框

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以下实例来自雄迈提供的Android SDK。动作为点击登录按钮后弹出一个填写用户信息的对话框。
if (loginButton.getText().toString().equals("登录")) {                LinearLayout layout = new LinearLayout(DemoMainActivity.this);                layout.setOrientation(LinearLayout.VERTICAL);                final EditText ip_et = new EditText(DemoMainActivity.this);                ip_et.setHint("ip地址");                ip_et.setText(SPUtil.getInstance(this).getSettingParam("Ip", "192.168.10.1"));                final EditText port_et = new EditText(DemoMainActivity.this);                port_et.setHint("端口");                port_et.setText(SPUtil.getInstance(this).getSettingParam("Port", "34567"));                final EditText name_et = new EditText(DemoMainActivity.this);                name_et.setHint("用户名");                name_et.setText(SPUtil.getInstance(this).getSettingParam("Name", "admin"));                final EditText pwd_et = new EditText(DemoMainActivity.this);                pwd_et.setHint("密码");                pwd_et.setText(SPUtil.getInstance(this).getSettingParam("Pwd", ""));                pwd_et.setSingleLine(true);                pwd_et.setInputType(InputType.TYPE_CLASS_TEXT |                                               InputType.TYPE_TEXT_VARIATION_PASSWORD);                layout.addView(ip_et, new LayoutParams(LayoutParams.MATCH_PARENT,                                                                  LayoutParams.WRAP_CONTENT));                layout.addView(port_et, new LayoutParams(LayoutParams.MATCH_PARENT,                                                         LayoutParams.WRAP_CONTENT));                layout.addView(name_et, new LayoutParams(LayoutParams.MATCH_PARENT,                                                         LayoutParams.WRAP_CONTENT));                layout.addView(pwd_et, new LayoutParams(LayoutParams.MATCH_PARENT,                                                         LayoutParams.WRAP_CONTENT));                new AlertDialog.Builder(DemoMainActivity.this).setTitle("输入登录信息").setView(layout)                        .setPositiveButton(android.R.string.ok, new DialogInterface.OnClickListener() {                            @Override                            public void onClick(DialogInterface arg0, int arg1) {                                final String name = name_et.getText().toString().trim();                                final String pwd = pwd_et.getText().toString().trim();                                final String ip = ip_et.getText().toString().trim();                                final String port = port_et.getText().toString().trim();                                new Thread(new Runnable() {                                    @Override                                    public void run() {                                        onLogin(ip, port, name, pwd);                                        Message msg = Message.obtain();                                        msg.what = 3;                                        myHandler.sendMessageDelayed(msg, 2000);                                    }                                }).start();                            }                        }).setNegativeButton(android.R.string.cancel, new DialogInterface.OnClickListener() {                            @Override                            public void onClick(DialogInterface arg0, int arg1) {                            }                        }).create().show();            }
显示效果如下：
这里写图片描述
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