我在我的应用程序中启用了硬件加速功能,但我已将其禁用,因为我遇到了中风帽等问题。
现在我在Google Play Crash Errors控制台中收到了这个堆栈跟踪:
java.lang.UnsupportedOperationException
at android.view.GLES20Canvas.clipPath(GLES20Canvas.java:287)
at com.myapp.MyCustomView.onDraw(SourceFile:288)
at android.view.View.draw(View.java:9310)
at android.view.View.getDisplayList(View.java:8773)
at android.view.ViewGroup.dispatchGetDisplayList(ViewGroup.java:2298)
...
at android.view.HardwareRenderer$GlRenderer.draw(HardwareRenderer.java:609)
at android.view.ViewRoot.draw(ViewRoot.java:1634)
at android.view.ViewRoot.performTraversals(ViewRoot.java:1450)
at android.view.ViewRoot.handleMessage(ViewRoot.java:2094)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:132)
at android.app.ActivityThread.main(ActivityThread.java:4123)
...
我在AndroidManifest.xml中指定了android:hardwareAccelerated="true"
。但我在自定义视图的构造函数中专门禁用了硬件加速:
public MyCustomView(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
// ... code omitted
// disable acceleration because Paint.setStrokeCap(Cap.ROUND) is not working otherwise
Compatibility.disableHardwareAcceleration(this);
}
兼容性是:
public class Compatibility {
// View.setLayerType() was introduced in Honeycomb
private static Method setLayerTypeMethod = getMethod(View.class, "setLayerType", int.class,
Paint.class);
private static Method getMethod(Class<?> clazz, String name, Class<?>... parameterTypes) {
try {
return clazz.getMethod(name, parameterTypes);
}
catch (NoSuchMethodException e) {
return null;
}
}
private Compatibility() {
}
public static void disableHardwareAcceleration(View view) {
try {
if (setLayerTypeMethod != null) {
int layerType = 1; // View.LAYER_TYPE_SOFTWARE
setLayerTypeMethod.invoke(view, layerType, null);
}
}
catch (Exception ignored) {
}
}
}
不幸的是,Crash Errors控制台不会显示有关Android OS版本或设备的信息。
有什么想法可能会发生什么?
答案 0 :(得分:6)
即使设置了LAYER_TYPE_SOFTWARE,仍然存在使用硬件加速仍然绘制视图的已知问题。详细信息为here
作为一种解决方法,您可以做两件事