Android中对话框的使用

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/widget28"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >

<TextView
android:id="@+id/nameMessage"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="Enter Name:" >
</TextView>

<EditText
android:id="@+id/nameEditText"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:textSize="18sp" >
</EditText>

<LinearLayout
android:id="@+id/buttonLayout"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal" >

<Button
android:id="@+id/okButton"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="OK" >
</Button>

<Button
android:id="@+id/cancelButton"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Cancel" >
</Button>
</LinearLayout>
</LinearLayout>

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >

<Button
android:id="@+id/startDialog"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Button" />

</LinearLayout>

package com.relin.dialog;

import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;

import com.relin.dialog.MyDialog.MyDialogListener;

public class AndroidDialogActivity extends Activity implements OnClickListener, MyDialogListener{
/** Called when the activity is first created. */

private Button startButton;

@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
startButton = (Button)findViewById(R.id.startDialog);
startButton.setOnClickListener(this);
}

@Override
public void onClick(View v) {
// TODO Auto-generated method stub
MyDialog dialog = new MyDialog(AndroidDialogActivity.this, this);
dialog.show();
}

@Override
public void onOkClick(String name) {
// TODO Auto-generated method stub
System.out.println("success~~~~~");
}

@Override
public void onCancelClick() {
// TODO Auto-generated method stub

}

}

package com.relin.dialog;

import android.app.Dialog;
import android.content.Context;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;

public class MyDialog extends Dialog implements OnClickListener{

private Button okButton;
private Button cancelButton;
private EditText nameEditText;
private MyDialogListener listener;

public MyDialog(Context context, boolean cancelable,
OnCancelListener cancelListener) {
super(context, cancelable, cancelListener);
// TODO Auto-generated constructor stub
}

public MyDialog(Context context, int theme) {
super(context, theme);
// TODO Auto-generated constructor stub
}

public MyDialog(Context context, MyDialogListener listener) {
super(context);
// TODO Auto-generated constructor stub
this.listener = listener;
}

@Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.dialog);

okButton = (Button)findViewById(R.id.okButton);
cancelButton = (Button)findViewById(R.id.cancelButton);
nameEditText = (EditText)findViewById(R.id.nameEditText);
okButton.setOnClickListener(this);
}

@Override
public void onClick(View view) {
// TODO Auto-generated method stub
switch (view.getId()) {
case R.id.okButton:
listener.onOkClick(nameEditText.getText().toString());
dismiss();
break;
case R.id.cancelButton:
cancel();
break;
}
}

public interface MyDialogListener {
public void onOkClick(String name);
public void onCancelClick();
}

}