Android UI开发第三十三篇——Navigation Drawer For Android API 7

Creating a Navigation Drawer中使用的Navigation Drawer的android:minSdkVersion="14"，现在Android API Version 小于14的还有30%左右呢。Android个版本的占有量可参考 Platform Version。

Android Platform Version

我们的应用为了适配不同的版本，需要降低minSdkVersion，作者一般适配SDK到API 7。这一篇博文也是把Creating a Navigation Drawer的例子适配到API 7 。例子中降低API最主要的修改Action Bar，Action Bar是API 11才出现的，适配到API 7，我们使用了actionbarsherlock.

修改后的代码：

08-13 13:26:15.909: E/AndroidRuntime(6832): FATAL EXCEPTION: main08-13 13:26:15.909: E/AndroidRuntime(6832): android.view.InflateException: Binary XML file line #2: Error inflating class <unknown>08-13 13:26:15.909: E/AndroidRuntime(6832):     at android.view.LayoutInflater.createView(LayoutInflater.java:518)08-13 13:26:15.909: E/AndroidRuntime(6832):     at com.android.internal.policy.impl.PhoneLayoutInflater.onCreateView(PhoneLayoutInflater.java:56)08-13 13:26:15.909: E/AndroidRuntime(6832):     at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:568)08-13 13:26:15.909: E/AndroidRuntime(6832):     at android.view.LayoutInflater.inflate(LayoutInflater.java:386)08-13 13:26:15.909: E/AndroidRuntime(6832):     at android.view.LayoutInflater.inflate(LayoutInflater.java:320)08-13 13:26:15.909: E/AndroidRuntime(6832):     at android.widget.ArrayAdapter.createViewFromResource(ArrayAdapter.java:332)08-13 13:26:15.909: E/AndroidRuntime(6832):     at android.widget.ArrayAdapter.getView(ArrayAdapter.java:323)08-13 13:26:15.909: E/AndroidRuntime(6832):     at android.widget.AbsListView.obtainView(AbsListView.java:1495)08-13 13:26:15.909: E/AndroidRuntime(6832):     at android.widget.ListView.measureHeightOfChildren(ListView.java:1216)08-13 13:26:15.909: E/AndroidRuntime(6832):     at android.widget.ListView.onMeasure(ListView.java:1127)08-13 13:26:15.909: E/AndroidRuntime(6832):     at android.view.View.measure(View.java:8335)08-13 13:26:15.909: E/AndroidRuntime(6832):     at android.widget.RelativeLayout.measureChild(RelativeLayout.java:566)08-13 13:26:15.909: E/AndroidRuntime(6832):     at android.widget.RelativeLayout.onMeasure(RelativeLayout.java:381)08-13 13:26:15.909: E/AndroidRuntime(6832):     at android.view.View.measure(View.java:8335)08-13 13:26:15.909: E/AndroidRuntime(6832):     at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:3138)08-13 13:26:15.909: E/AndroidRuntime(6832):     at android.widget.FrameLayout.onMeasure(FrameLayout.java:250)08-13 13:26:15.909: E/AndroidRuntime(6832):     at android.view.View.measure(View.java:8335)08-13 13:26:15.909: E/AndroidRuntime(6832):     at android.widget.LinearLayout.measureVertical(LinearLayout.java:531)08-13 13:26:15.909: E/AndroidRuntime(6832):     at android.widget.LinearLayout.onMeasure(LinearLayout.java:309)08-13 13:26:15.909: E/AndroidRuntime(6832):     at android.view.View.measure(View.java:8335)08-13 13:26:15.909: E/AndroidRuntime(6832):     at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:3138)08-13 13:26:15.909: E/AndroidRuntime(6832):     at android.widget.FrameLayout.onMeasure(FrameLayout.java:250)08-13 13:26:15.909: E/AndroidRuntime(6832):     at android.view.View.measure(View.java:8335)08-13 13:26:15.909: E/AndroidRuntime(6832):     at android.view.ViewRoot.performTraversals(ViewRoot.java:843)08-13 13:26:15.909: E/AndroidRuntime(6832):     at android.view.ViewRoot.handleMessage(ViewRoot.java:1892)08-13 13:26:15.909: E/AndroidRuntime(6832):     at android.os.Handler.dispatchMessage(Handler.java:99)08-13 13:26:15.909: E/AndroidRuntime(6832):     at android.os.Looper.loop(Looper.java:130)08-13 13:26:15.909: E/AndroidRuntime(6832):     at android.app.ActivityThread.main(ActivityThread.java:3835)08-13 13:26:15.909: E/AndroidRuntime(6832):     at java.lang.reflect.Method.invokeNative(Native Method)08-13 13:26:15.909: E/AndroidRuntime(6832):     at java.lang.reflect.Method.invoke(Method.java:507)08-13 13:26:15.909: E/AndroidRuntime(6832):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:864)08-13 13:26:15.909: E/AndroidRuntime(6832):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:622)08-13 13:26:15.909: E/AndroidRuntime(6832):     at dalvik.system.NativeStart.main(Native Method)08-13 13:26:15.909: E/AndroidRuntime(6832): Caused by: java.lang.reflect.InvocationTargetException08-13 13:26:15.909: E/AndroidRuntime(6832):     at java.lang.reflect.Constructor.constructNative(Native Method)08-13 13:26:15.909: E/AndroidRuntime(6832):     at java.lang.reflect.Constructor.newInstance(Constructor.java:415)08-13 13:26:15.909: E/AndroidRuntime(6832):     at android.view.LayoutInflater.createView(LayoutInflater.java:505)08-13 13:26:15.909: E/AndroidRuntime(6832):     ... 32 more08-13 13:26:15.909: E/AndroidRuntime(6832): Caused by: java.lang.UnsupportedOperationException: Can't convert to dimension: type=0x208-13 13:26:15.909: E/AndroidRuntime(6832):     at android.content.res.TypedArray.getDimensionPixelSize(TypedArray.java:463)08-13 13:26:15.909: E/AndroidRuntime(6832):     at android.view.View.<init>(View.java:1978)08-13 13:26:15.909: E/AndroidRuntime(6832):     at android.widget.TextView.<init>(TextView.java:350)08-13 13:26:15.909: E/AndroidRuntime(6832):     at android.widget.TextView.<init>(TextView.java:343)08-13 13:26:15.909: E/AndroidRuntime(6832):     ... 35 more

这个异常是drawer_list_item.xml文件的内容产生的，drawer_list_item.xml内容：
1）修改drawer_list_item.xml文件，使用自定义的属性
<?xml version="1.0" encoding="UTF-8"?><TextView xmlns:android="http://schemas.android.com/apk/res/android"    android:id="@android:id/text1"    android:layout_width="match_parent"    android:layout_height="wrap_content"    android:background="?attr/myapp_activatedBackgroundIndicator"    android:gravity="center_vertical"    android:minHeight="?attr/myapp_listPreferredItemHeightSmall"    android:paddingLeft="16dp"    android:paddingRight="16dp"    android:textAppearance="?attr/myapp_textAppearanceListItemSmall" />

2）在values/attrs.xml文件中声明自定义属性

OK，经过上面步骤，运行成功，这样上一篇的例子就能很好的适配到API 7了。
         

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代码下载：Demo

1楼u011960402昨天 16:50
不错