使用样式文件,在values 目录下新建styles.xml文件,编写如下代码:
?
<!--<br/ /><br/ />Code highlighting produced by Actipro CodeHighlighter (freeware)<br/ />http://www.CodeHighlighter.com/<br/ /><br/ />--><resources>
????<style?name="dialog"?parent="@android:style/Theme.Dialog">
?????????<item?name="android:windowFrame">@null</item>
????????<item?name="android:windowIsFloating">true</item>
????????<item?name="android:windowIsTranslucent">false</item>
????????<item?name="android:windowNoTitle">true</item>
????????<item?name="android:background">@android:color/black</item>
????????<item?name="android:windowBackground">@null</item>
????????<item?name="android:backgroundDimEnabled">false</item>
????</style>
</resources>
????<style?name="dialog"?parent="@android:style/Theme.Dialog">
?????????<item?name="android:windowFrame">@null</item>
????????<item?name="android:windowIsFloating">true</item>
????????<item?name="android:windowIsTranslucent">false</item>
????????<item?name="android:windowNoTitle">true</item>
????????<item?name="android:background">@android:color/black</item>
????????<item?name="android:windowBackground">@null</item>
????????<item?name="android:backgroundDimEnabled">false</item>
????</style>
</resources>
?
?
调用时,使用AlerDialog的接口类,Dialog 接口编写如下代码:
?
<!--<br/ /><br/ />Code highlighting produced by Actipro CodeHighlighter (freeware)<br/ />http://www.CodeHighlighter.com/<br/ /><br/ />-->????Dialog?dialog?=?new?Dialog(SetActivity.this,?R.style.dialog);
????????????????????dialog.setContentView(R.layout.test);
????????????????????dialog.show();
????????????????????dialog.setContentView(R.layout.test);
????????????????????dialog.show();
?
下面我们查看一下Dialog的源码文件,里面的构造函数为如下:
?
<!--<br/ /><br/ />Code highlighting produced by Actipro CodeHighlighter (freeware)<br/ />http://www.CodeHighlighter.com/<br/ /><br/ />-->public?Dialog(Context?context,?int?theme)?{
????????mContext?=?new?ContextThemeWrapper(
????????????context,?theme?==?0???com.android.internal.R.style.Theme_Dialog?:?theme);
????????mWindowManager?=?(WindowManager)context.getSystemService("window");
????????Window?w?=?PolicyManager.makeNewWindow(mContext);
????????mWindow?=?w;
????????w.setCallback(this);
????????w.setWindowManager(mWindowManager,?null,?null);
????????w.setGravity(Gravity.CENTER);
????????mUiThread?=?Thread.currentThread();
????????mDismissCancelHandler?=?new?DismissCancelHandler(this);
????}
????????mContext?=?new?ContextThemeWrapper(
????????????context,?theme?==?0???com.android.internal.R.style.Theme_Dialog?:?theme);
????????mWindowManager?=?(WindowManager)context.getSystemService("window");
????????Window?w?=?PolicyManager.makeNewWindow(mContext);
????????mWindow?=?w;
????????w.setCallback(this);
????????w.setWindowManager(mWindowManager,?null,?null);
????????w.setGravity(Gravity.CENTER);
????????mUiThread?=?Thread.currentThread();
????????mDismissCancelHandler?=?new?DismissCancelHandler(this);
????}
?
这里面我们可以看出,Android 使用了默认的构造函数为Dialog 设置样式,如果没有为其设置样式,即默认加载事先编写好的样式文件,Dialog 一共由多个9.png的图片构成,大部分都是带有边框的9.png图片,所以就是为什么我们上边的样式文件要将其背景去除掉。这个东西搞了我好久,希望对你有帮助
?
?
前后效果对比
未设置前:
?
设置后: