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[英]how to pass a thread class object from activity to activity using parcelable
[英]how to pass BitmapShader class object using parcelable?
这是例外
java.lang.RuntimeException: Parcel: unable to marshal value android.graphics.BitmapShader@419d81a0
at android.os.Parcel.writeValue(Parcel.java:1235)
at com.imagepatterns.ShaderParcelalable.writeToParcel(ShaderParcelalable.java:47)
at android.os.Parcel.writeParcelable(Parcel.java:1254)
at android.os.Parcel.writeValue(Parcel.java:1173)
at android.os.Parcel.writeMapInternal(Parcel.java:591)
at android.os.Bundle.writeToParcel(Bundle.java:1619)
at android.os.Parcel.writeBundle(Parcel.java:605)
at android.content.Intent.writeToParcel(Intent.java:6470)
at android.app.ActivityManagerProxy.finishActivity(ActivityManagerNative.java:1921)
at android.app.Activity.finish(Activity.java:4135)
at com.imagepatterns.ImagePatternActivity.sendResultBack(ImagePatternActivity.java:111)
at com.imagepatterns.ImagePatternActivity.access$100(ImagePatternActivity.java:31)
at com.imagepatterns.ImagePatternActivity$1.onClick(ImagePatternActivity.java:52)
at android.view.View.performClick(View.java:4106)
at android.view.View$PerformClick.run(View.java:17052)
at android.os.Handler.handleCallback(Handler.java:615)
at android.os.Handler.dispatchMessage(Handler.java:92)
at android.os.Looper.loop(Looper.java:137)
at android.app.ActivityThread.main(ActivityThread.java:5059)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:511)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:792)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:555)
at dalvik.system.NativeStart.main(Native Method)
我的代码是
public class ShaderParcelalable implements Parcelable {
public BitmapShader getShader() {
return shader;
}
private BitmapShader shader;
protected ShaderParcelalable(Parcel in) {
this.shader = (BitmapShader) in.readValue(BitmapShader.class.getClassLoader());
}
public ShaderParcelalable(BitmapShader shader) {
this.shader = shader;
}
public static final Creator<ShaderParcelalable> CREATOR = new Creator<ShaderParcelalable>() {
@Override
public ShaderParcelalable createFromParcel(Parcel in) {
return new ShaderParcelalable(in);
}
@Override
public ShaderParcelalable[] newArray(int size) {
return new ShaderParcelalable[size];
}
};
@Override
public int describeContents() {
return 0;
}
@Override
public void writeToParcel(Parcel dest, int flags) {
dest.writeValue(shader);
}
}
BitmapShader类未实现Parcelable,因此您不能使用这种方式。 根据您的用例,您可以例如保存(重新)创建BitmapShader所需的参数。 对于BitmapShader类,您可以尝试保存
在包裹中。 然后,您可以使用此数据重新创建BitmapShader。 这不是最佳选择,但另一方面,您可能需要重新考虑您的体系结构。
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