自定义Dialog对话框

布局文件：

my_dlg.xml:

<?xml version="1.0" encoding="utf-8"?>

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"

    android:orientation="vertical"

    android:layout_width="300dp"

    android:layout_height="wrap_content"

    >

<TextView

    android:layout_width="wrap_content" 

	android:layout_height="wrap_content" 

	android:text="使用者姓名："

    />

<EditText android:id="@+id/edtUserName"

    android:layout_width="fill_parent" 

    android:layout_height="wrap_content" 

    android:text=""

    />

<TextView

    android:layout_width="wrap_content" 

	android:layout_height="wrap_content" 

	android:text="密码："

    />

<EditText android:id="@+id/edtPassword"

    android:layout_width="fill_parent" 

    android:layout_height="wrap_content"

    android:inputType="textPassword"

    android:text=""

    />

<LinearLayout

    android:orientation="horizontal"

    android:layout_width="fill_parent"

    android:layout_height="wrap_content"

    android:gravity="center"

    >

<Button android:id="@+id/btnOK"

    android:layout_width="160dp" 

    android:layout_height="wrap_content" 

    android:text="确定登陆"

    />

<Button android:id="@+id/btnCancel"

    android:layout_width="80dp" 

    android:layout_height="wrap_content" 

    android:text="取消"

    />

</LinearLayout>

</LinearLayout>

　　main.xml:

<?xml version="1.0" encoding="utf-8"?>

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"

    android:orientation="horizontal"

    android:layout_width="fill_parent"

    android:layout_height="fill_parent"

    >

<LinearLayout

    android:orientation="vertical"

    android:layout_width="0dp"

    android:layout_height="fill_parent"

    android:layout_weight="1"

    />

<LinearLayout

    android:orientation="vertical"

    android:layout_width="0dp"

    android:layout_height="fill_parent"

    android:layout_weight="1"

    >

<Button android:id="@+id/btnLoginDlg"

   	android:layout_width="fill_parent" 

    android:layout_height="wrap_content" 

    android:text="登入系統"

    />

<TextView android:id="@+id/txtResult"

    android:layout_width="wrap_content" 

    android:layout_height="wrap_content" 

    android:text=""

	/>

</LinearLayout>

<LinearLayout

    android:orientation="vertical"

    android:layout_width="0dp"

    android:layout_height="fill_parent"

    android:layout_weight="1"

    />

</LinearLayout>

　　

package tw.android;



import android.app.Activity;

import android.app.Dialog;

import android.os.Bundle;

import android.view.View;

import android.widget.*;



public class Main extends Activity {



	private Button mBtnLoginDlg;

	private TextView mTxtResult;

	private Dialog mLoginDlg;



	/** Called when the activity is first created. */

    @Override

    public void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.main);



        setupViewComponent();

    }

    

    private void setupViewComponent() {

		mBtnLoginDlg = (Button)findViewById(R.id.btnLoginDlg);

		mTxtResult = (TextView)findViewById(R.id.txtResult);



		mBtnLoginDlg.setOnClickListener(btnLoginDlgOnClkLis);

    }



    private Button.OnClickListener btnLoginDlgOnClkLis = new Button.OnClickListener() {

		public void onClick(View v) {

			mTxtResult.setText("");

			

			mLoginDlg = new Dialog(Main.this);//建立的Dialog对象必须制定它的拥有者。

			mLoginDlg.setTitle("登陆系统");

			mLoginDlg.setCancelable(false);//设置Cancelable属性，让用户无法使用“回上一页”按钮离开对话框

			mLoginDlg.setContentView(R.layout.login_dlg);

			Button loginBtnOK = (Button)mLoginDlg.findViewById(R.id.btnOK);

			Button loginBtnCancel = (Button)mLoginDlg.findViewById(R.id.btnCancel);

			loginBtnOK.setOnClickListener(loginDlgBtnOKOnClkLis);

			loginBtnCancel.setOnClickListener(loginDlgBtnCancelOnClkLis);

			mLoginDlg.show();			

		}

	};

	

    private Button.OnClickListener loginDlgBtnOKOnClkLis = new Button.OnClickListener() {

		public void onClick(View v) {

			EditText edtUserName = (EditText)mLoginDlg.findViewById(R.id.edtUserName);

			EditText edtPassword = (EditText)mLoginDlg.findViewById(R.id.edtPassword);



			mTxtResult.setText("请你输入的使用者姓名：" + edtUserName.getText().toString() +

								"密码：" + edtPassword.getText().toString());

			mLoginDlg.cancel();

		}

	};

	

    private Button.OnClickListener loginDlgBtnCancelOnClkLis = new Button.OnClickListener() {

		public void onClick(View v) {

			mTxtResult.setText("你按下\"取消\"按钮。");

			mLoginDlg.cancel();

		}

	};

}