半透明对话框

首先，设置要覆盖在最上方的dialog的view

 

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout android:background="@drawable/navigater_bg" android:padding="0.0dip" android:layout_width="fill_parent" android:layout_height="fill_parent"
  xmlns:android="http://schemas.android.com/apk/res/android">
    <ImageView android:id="@id/ivNavigater_top" android:layout_width="wrap_content" android:layout_height="wrap_content" android:src="@drawable/navigater_top" android:layout_alignParentTop="true" android:layout_centerHorizontal="true" />
    <ImageView android:id="@id/ivNavigater_center" android:layout_width="wrap_content" android:layout_height="wrap_content" android:src="@drawable/navigater_center" android:layout_centerInParent="true" />
    <ImageView android:id="@id/ivNavigater_clickable" android:padding="0.0dip" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_margin="0.0dip" android:src="@drawable/navigater_clickable" android:layout_alignParentRight="true" android:layout_alignParentBottom="true" />
    <ImageView android:id="@id/ivNavigater_bottom" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_margin="0.0dip" android:src="@drawable/navigater_bottom" android:adjustViewBounds="true" android:layout_alignParentLeft="true" android:layout_alignParentBottom="true" />
</RelativeLayout>

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout android:background="@drawable/navigater_bg" android:padding="0.0dip" android:layout_width="fill_parent" android:layout_height="fill_parent"
  xmlns:android="http://schemas.android.com/apk/res/android">
    <ImageView android:id="@id/ivNavigater_top" android:layout_width="wrap_content" android:layout_height="wrap_content" android:src="@drawable/navigater_top" android:layout_alignParentTop="true" android:layout_centerHorizontal="true" />
    <ImageView android:id="@id/ivNavigater_center" android:layout_width="wrap_content" android:layout_height="wrap_content" android:src="@drawable/navigater_center" android:layout_centerInParent="true" />
    <ImageView android:id="@id/ivNavigater_clickable" android:padding="0.0dip" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_margin="0.0dip" android:src="@drawable/navigater_clickable" android:layout_alignParentRight="true" android:layout_alignParentBottom="true" />
    <ImageView android:id="@id/ivNavigater_bottom" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_margin="0.0dip" android:src="@drawable/navigater_bottom" android:adjustViewBounds="true" android:layout_alignParentLeft="true" android:layout_alignParentBottom="true" />
</RelativeLayout>

 

 

然后，在values/styles.xml添加style for 半透明：

 

 

<style name="Dialog_Fullscreen">
    <item name="android:windowBackground">@android:color/transparent</item>
    <item name="android:windowNoTitle">true</item>
    <item name="android:windowIsTranslucent">true</item>
    <item name="android:windowContentOverlay">@null</item>
    <item name="android:windowAnimationStyle">@style/Dialog_Anim</item>
    <item name="android:colorBackgroundCacheHint">@null</item>
</style>

    <style name="Dialog_Fullscreen">
        <item name="android:windowBackground">@android:color/transparent</item>
        <item name="android:windowNoTitle">true</item>
        <item name="android:windowIsTranslucent">true</item>
        <item name="android:windowContentOverlay">@null</item>
        <item name="android:windowAnimationStyle">@style/Dialog_Anim</item>
        <item name="android:colorBackgroundCacheHint">@null</item>
    </style>

继续添加style for 淡入淡出效果：

 

 

<style name="Dialog_Anim">
    <item name="android:windowEnterAnimation">@anim/fading_in</item>
    <item name="android:windowExitAnimation">@anim/fading_out</item>
</style>

    <style name="Dialog_Anim">
        <item name="android:windowEnterAnimation">@anim/fading_in</item>
        <item name="android:windowExitAnimation">@anim/fading_out</item>
    </style>

在anim文件夹下，添加文件fading_in.xml for 淡入

 

 

<?xml version="1.0" encoding="utf-8"?>
<set
  xmlns:android="http://schemas.android.com/apk/res/android">
    <alpha android:duration="500" android:fromAlpha="0.1" android:toAlpha="1.0" />
</set>

<?xml version="1.0" encoding="utf-8"?>
<set
  xmlns:android="http://schemas.android.com/apk/res/android">
    <alpha android:duration="500" android:fromAlpha="0.1" android:toAlpha="1.0" />
</set>

添加文件fading_out.xml for 淡出

 

 

<?xml version="1.0" encoding="utf-8"?>
<set
  xmlns:android="http://schemas.android.com/apk/res/android">
    <alpha android:duration="500" android:fromAlpha="0.1" android:toAlpha="1.0" />
</set>

<?xml version="1.0" encoding="utf-8"?>
<set
  xmlns:android="http://schemas.android.com/apk/res/android">
    <alpha android:duration="500" android:fromAlpha="0.1" android:toAlpha="1.0" />
</set>

最后，在要弹出对话框的地方添加如下代码：

 

 

      Dialog dialog = new Dialog(this, R.style.Dialog_Fullscreen);
      dialog.setContentView(R.layout.sina);
      ImageView iv = (ImageView)dialog.findViewById(R.id.ivNavigater_clickable);
      iv.setOnClickListener(new OnClickListener() {

    @Override
    public void onClick(View v) {
        dialog.dismiss();
    }
});
      dialog.show();

        Dialog dialog = new Dialog(this, R.style.Dialog_Fullscreen);        
        dialog.setContentView(R.layout.sina);
        ImageView iv = (ImageView)dialog.findViewById(R.id.ivNavigater_clickable);
        iv.setOnClickListener(new OnClickListener() {
			
			@Override
			public void onClick(View v) {
				dialog.dismiss();
			}
		});
        dialog.show();

 

最终效果如图：

自己补充一下：这里实现的dialog中添加的布局文件要使用办透明背景，否则一样会被遮盖住。

 

转自：http://blog.csdn.net/sunmanzth/article/details/6902458