Android 自定义dialog

1.MainActivity.java

package com.future.test;

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

public class MainActivity extends Activity {
	@Override
	public void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.main);
		Button button = (Button) findViewById(R.id.button1);
		button.setOnClickListener(new OnClickListener() {

			@Override
			public void onClick(View v) {
				// 初始化一个自定义的Dialog
				Dialog dialog = new MyDialog(MainActivity.this,R.style.MyDialog);
				dialog.show();
			}
		});
	}
}

2. values下的style.xml

<?xml version="1.0" encoding="utf-8"?>
<resources>
    <style name="MyDialog" parent="@android:Theme.Dialog">
        <item name="android:windowFrame">@null</item>
        <item name="android:windowNoTitle">true</item> 
        <item name="android:windowBackground">@drawable/col_opacity_0</item>
        <item name="android:windowIsFloating">true</item>
        <item name="android:windowContentOverlay">@null</item>
    </style>
</resources>

3.Mydialog类继承dialog

package com.future.test;

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.Toast;

public class MyDialog extends Dialog implements OnClickListener{
	
	private Context context;

	public MyDialog(Context context, int theme) {
		super(context, theme);
		this.context = context;
	}

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		this.setContentView(R.layout.dialog);
		
		Button mButtonOk = (Button) this.findViewById(R.id.dialog_button_ok);
		mButtonOk.setOnClickListener(this);
		Button mButtonCancel = (Button) this.findViewById(R.id.dialog_button_cancel);
		mButtonCancel.setOnClickListener(this);
	}

	@Override
	public void onClick(View v) {
		switch(v.getId())
		{
		case R.id.dialog_button_ok:
			this.showToast("确定");
			break;
		case R.id.dialog_button_cancel:
			this.showToast("取消");
			this.dismiss();
			break;
		}
	}
	
	private void showToast(String text)
	{
		Toast.makeText(this.context, text, Toast.LENGTH_LONG).show();
	}
}

4. Mydialog里面的dialog.xml布局

<?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="wrap_content"
    android:layout_marginLeft="20dp"
    android:layout_marginRight="20dp">
    <RelativeLayout 
    	android:layout_width="fill_parent"
    	android:layout_height="wrap_content"
    	android:paddingTop="10dp"
    	android:paddingBottom="10dp"
    	android:background="#18517B" >
    	<TextView 
    		android:layout_width="fill_parent"
	    	android:layout_height="wrap_content" 
	    	android:gravity="center"
	    	android:textSize="20sp"
	    	android:textColor="#ffffff"
	    	android:text="确认退出" />
    </RelativeLayout>
    <!-- 间隔线
    <TextView android:layout_width="fill_parent"
    	android:layout_height="1dp"
    	android:background="@drawable/lins"/>
     -->
    <RelativeLayout 
    	android:layout_width="fill_parent"
    	android:layout_height="wrap_content" 
    	android:paddingTop="20dp"
    	android:background="#ffffff">
    	<TextView 
    		android:id="@+id/quit_true"
    		android:layout_width="fill_parent"
    		android:layout_height="wrap_content"
    		android:text="确定要退出游戏吗？"
    		android:textSize="20sp"
    		android:textColor="#000000"
    		android:gravity="center" />
    	<RelativeLayout 
    		android:layout_width="fill_parent"
    		android:layout_height="wrap_content" 
    		android:layout_centerInParent="true" 
    		android:layout_below="@id/quit_true"  
    		android:paddingTop="20dp"
    		android:paddingLeft="30dp"
    		android:paddingRight="30dp"
    		android:paddingBottom="20dp">
    		<Button 
	            android:id="@+id/dialog_button_ok" 
	            android:layout_width="wrap_content"  
	            android:layout_height="wrap_content" 
	            android:background="@drawable/selor"
	            android:layout_alignParentLeft="true"
	            android:text="确定"/>
	        <Button 
	            android:id="@+id/dialog_button_cancel" 
	            android:layout_width="wrap_content"
	            android:layout_height="wrap_content"
	            android:layout_alignParentRight="true" 
	            android:background="@drawable/selor"  
	            android:text="取消"/>
    	</RelativeLayout>
    </RelativeLayout>
</LinearLayout>

5. 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:text="显示自定义Dialog" 
        android:id="@+id/button1"
        android:layout_height="wrap_content" 
        android:layout_width="fill_parent"/>
</LinearLayout>

6. 在处理按钮的颜色按下变色的时候，我定义一个selor.xml文件来变换它，但是不起作用，我有在selor.xml里面又用到了一个btn_style.xml文件才能起到作用，不知道怎么回事要套两层

selor.xml文件

<?xml version="1.0" encoding="utf-8"?>
<selector 
 xmlns:android="http://schemas.android.com/apk/res/android"> 
	<item android:state_selected="true" android:drawable="@drawable/btn_style"/> 
    <item android:drawable="@drawable/btn_style"/> 
</selector>

btn_style.xml文件

<?xml version="1.0" encoding="utf-8" ?> 
<selector xmlns:android="http://schemas.android.com/apk/res/android">
	<item android:state_pressed="true" android:drawable="@drawable/btn_bg_pressed"/>
	<item android:drawable="@drawable/btn_bg"/>
</selector>

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