Bitmap too large to be uploaded into a texture,Hardware accelerated
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Android的硬件加速及可能导致的问题
问题
在Android 4.0的某些设备上，在View刷新时会出现花屏和屏幕上的某些View错位的现象。 经过调查后发现adb logcat中出现很多OpenGLRenderer: 0x501的错位：
从这个日志，初步怀疑是硬件加速导致的问题。 经过分析发现使用了比较复杂的自定义View，可能会导致硬件加速渲染出错。
硬件加速的优点与缺点
硬件加速能使用GPU来加速2D图像的渲染速度，但是硬件加速并不能完全支持所有的渲染操作， 针对自定义的View，硬件加速可能导致渲染出现错误。 如果有自定义的View，需要在硬件加速的设备上进行测试，如果出现渲染的问题，需要关闭硬件加速。
开启和关闭硬件加速
对硬件加速的开关可以在不同的级别进行控制：
- Application
- Activity
- Windows
- View
Application级别
在Applciation级别控制硬件加速的开关：
Activity级别
可以对单个的Activity控制是否启用硬件加速：
Window级别
View级别
在指定的View上关闭硬件加速：
或者使用android:layerType="software"来关闭硬件加速：
如何判断一个View是否启用了硬件加速
View.isHardwareAccelerated()returns true if the View is attached to a hardware accelerated window.Canvas.isHardwareAccelerated()returns true if the Canvas is hardware accelerated
参考
- http://developer.android.com/guide/topics/graphics/hardware-accel.html
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