自定义Dialog UI

        本例中CustomDialog继承Dialog，使用custom_dialog.xml布局文件。

custom_dialog.xml，这里就随便布局了一下

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/layout_root"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:orientation="horizontal"
    android:padding="10dp" >

    <ImageView
        android:id="@+id/image"
        android:layout_width="wrap_content"
        android:layout_height="fill_parent"
        android:layout_marginRight="10dp" />

    <LinearLayout
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:orientation="vertical"
        android:padding="5px" >

        <TextView
            android:id="@+id/text"
            android:layout_width="wrap_content"
            android:layout_height="fill_parent"
            android:textColor="#FFF" />

        <LinearLayout
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:orientation="horizontal"
            android:padding="5px" >

            <Button
                android:id="@+id/button_yes"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:gravity="center"
                android:text=" Yes " />

            <Button
                android:id="@+id/button_no"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:gravity="center"
                android:text=" No " />
        </LinearLayout>
    </LinearLayout>

</LinearLayout>

main.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    >
<Button
	android:id="@+id/main_button"  
    android:layout_width="fill_parent" 
    android:layout_height="wrap_content" 
    android:text="click to start an Dialog"
    />
</LinearLayout>

CustomDialog.java，CustomDialog继承Dialog，使用起来和Activity差不多，通过setContentView()指定使用的布局文件，剩下的就和Activity差不多了，就是一些findViewById()和setListener()。

package com.android.CustomDialog;

import android.app.Dialog;
import android.content.Context;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.TextView;

public class CustomDialog extends Dialog {

	public CustomDialog(Context context) {
		super(context);
		// TODO Auto-generated constructor stub
	}
	
	 protected void onCreate(Bundle savedInstanceState){
		 super.onCreate(savedInstanceState);
		 
		 setContentView(R.layout.custom_dialog);
		 setTitle("Custom Dialog");

		 TextView text = (TextView)findViewById(R.id.text);
		 text.setText("Hello, this is a custom dialog!");
		 ImageView image = (ImageView)findViewById(R.id.image);
		 image.setImageResource(R.drawable.sepurple);
		 
		 Button buttonYes = (Button) findViewById(R.id.button_yes);
		 buttonYes.setHeight(5);
		 buttonYes.setOnClickListener(new Button.OnClickListener(){

				public void onClick(View v) {
					// TODO Auto-generated method stub
					dismiss();
					
				}
	        });
		 Button buttonNo = (Button) findViewById(R.id.button_no);
		 buttonNo.setSingleLine(true);
		 buttonNo.setOnClickListener(new Button.OnClickListener(){

				public void onClick(View v) {
					// TODO Auto-generated method stub
					dismiss();
					
				}
	        });
	 }
	 
	 //called when this dialog is dismissed
	 protected void onStop() {
		 Log.d("TAG","+++++++++++++++++++++++++++");
	 }
	 

}

CustomDialogUsage.java，这里重写了Activity的onCreateDialog()方法创建Dialog()，并为Dialog设置了OnDismissListener，没什么特别的。

package com.android.CustomDialog;

import android.app.Activity;
import android.app.Dialog;
import android.content.DialogInterface;
import android.content.DialogInterface.OnDismissListener;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.Toast;

public class CustomDialogUsage extends Activity {

	OnDismissListener lis;
	/** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        
        lis  =  new OnDismissListener() {
			
			@Override
			public void onDismiss(DialogInterface dialog) {
				// TODO Auto-generated method stub
				Toast.makeText(getApplicationContext(), 
                        ((CustomDialog)dialog).toString(), 
                        Toast.LENGTH_SHORT) 
                .show();
			}
		};
		
        Button buttonYes = (Button) findViewById(R.id.main_button);
        buttonYes.setOnClickListener(new OnClickListener(){

			public void onClick(View v) {
				// TODO Auto-generated method stub
		        showDialog(0);
			}
        });

    }
    
    @Override
    protected Dialog onCreateDialog(int id) {
    	// TODO Auto-generated method stub
    	Dialog d = new CustomDialog(this);
    	d.setOnDismissListener(lis);
    	return d;
    }
    
    @Override
    protected void onPrepareDialog(int id, Dialog dialog) {
    	// TODO Auto-generated method stub
    	super.onPrepareDialog(id, dialog);
    }
    
}