android:name="Snake" android:screenOrientation="portrait"
http://www.cnblogs.com/and_he/archive/2011/05/24/2055103.html
http://www.cnblogs.com/and_he/archive/2011/05/24/2055087.html
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android:id="@+id/snake"
@+id 新增一个资源id
@id和android:id,引用现有的资源id
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启动虚拟机
emulator -partition-size 256 -avd "虚拟机名"
读写权限
adb remount
写入文件
adb push "F:\com.google.android.maps.jar" "/system/framework/"
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android:gravity="center" TextView文字水平及垂直居中
android:gravity="center_vertical|left" 文字垂直居中靠左