自定义activity窗口大小

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1.创建一个背景配置文件,放到res/drawable目录下

<?xml version="1.0" encoding="utf-8"?><shape xmlns:android="http://schemas.android.com/apk/res/android"    android:shape="rectangle" >    <!-- 填充 -->    <solid android:color="#9000" />    <!-- 描边 -->    <stroke        android:width="1dp"        android:color="@color/white50" />    <!-- 圆角 -->    <corners android:radius="3dp" />    <!-- 间隔 -->    <padding        android:bottom="3dp"        android:left="3dp"        android:right="3dp"        android:top="3dp" /></shape>

2.定义一个对话框样式,放到res/values/styles.xml文件中

    <style name="Theme.Test" parent="android:style/Theme.Dialog">        <item name="android:windowNoTitle">true</item>        <item name="android:windowIsTranslucent">true</item>        <item name="android:windowAnimationStyle">@android:style/Animation.Translucent</item>        <item name="android:height">100dp</item>        <item name="android:width">100dp</item>        <item name="android:windowBackground">@drawable/shape_trans_rectangle</item>    </style>

3.修改Manifes.xml,将我们刚才创建的样式应用到activity上面

        <activity            android:name=".activity.cgo4.TestActivity"            android:screenOrientation="landscape"            android:theme="@style/Test" />

不出意外,到此已经大功告成.
但是我使用了v4包里的drawlayout控件,出现了如下异常:

java.lang.IllegalArgumentException: DrawerLayout must be measured with MeasureSpec.EXACTLY.    at android.support.v4.widget.DrawerLayout.onMeasure(DrawerLayout.java:591)    at android.view.View.measure(View.java:15172)    at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:4816)    at android.widget.FrameLayout.onMeasure(FrameLayout.java:310)    at android.view.View.measure(View.java:15172)    at android.view.ViewRootImpl.performMeasure(ViewRootImpl.java:1850)    at android.view.ViewRootImpl.measureHierarchy(ViewRootImpl.java:1102)    at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1275)    at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1000)    at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:4214)    ....

发现问题是:
drawlayout的height和width设置为match_parent问题.
All I have is a fragment whose root view is a DrawerLayout with width and height match_parent. I get the DrawerLayout must be measured with MeasureSpec.EXACTLY exception at runtime (although it looks fine at design time now).

解决方法:
extending the DrawerLayout, and overriding onMeasure() .

public class CustomDrawerLayout extends DrawerLayout {    public CustomDrawerLayout(Context context) {        super(context);    }    public CustomDrawerLayout(Context context, AttributeSet attrs) {        super(context, attrs);    }    public CustomDrawerLayout(Context context, AttributeSet attrs, int defStyle) {        super(context, attrs, defStyle);    }    @Override    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {        widthMeasureSpec = MeasureSpec.makeMeasureSpec(                MeasureSpec.getSize(widthMeasureSpec), MeasureSpec.EXACTLY);        heightMeasureSpec = MeasureSpec.makeMeasureSpec(                MeasureSpec.getSize(heightMeasureSpec), MeasureSpec.EXACTLY);        super.onMeasure(widthMeasureSpec, heightMeasureSpec);    }}

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