我正在尝试检查图像（位图）是否设置为imageview，如果是，我将停止进度条可见性。
我的代码如下：
我打电话给服务器获取图像，内部监听器成功我按如下方式设置了imageview：
mImageView.setImageBitmap(bitmap);
if(hasImage(mImageView)) {
showProgress(false);
}
public void showProgress(final boolean show) {
int shortAnimTime = getResources().
getInteger(android.R.integer.
config_shortAnimTime);
mImageView.setVisibility(show ? View.GONE : View.VISIBLE);
mImageView.animate().setDuration(shortAnimTime).alpha(
show ? 0 : 1).setListener(new AnimatorListenerAdapter() {
@Override
public void onAnimationEnd(Animator animation) {
mImageView.setVisibility(show ? View.GONE : View.VISIBLE);
}
});
mProgressBar.setVisibility(show ? View.VISIBLE : View.GONE);
mProgressBar.animate().setDuration(shortAnimTime).alpha(
show ? 1 : 0).setListener(new AnimatorListenerAdapter() {
@Override
public void onAnimationEnd(Animator animation) {
mProgressBar.setVisibility(show ? View.VISIBLE:View.GONE);
}
});
}
private boolean hasImage(ImageView view) {
Drawable drawable = view.getDrawable();
boolean hasImage = (drawable != null);
if (hasImage && (drawable instanceof BitmapDrawable)) {
hasImage = ((BitmapDrawable)drawable).getBitmap() != null;
}
return hasImage;
}
图像显示正常但我的应用程序崩溃时，我滑动图像太快，出现以下错误：
以下是两种错误：
logcat 1：
FATAL EXCEPTION: main
Process: com.ceiva.snap, PID: 28985
java.lang.IllegalStateException: Fragment PhotoFragment{1c7b662a} not attached to Activity
at android.support.v4.app.Fragment.getResources(Fragment.java:620)
at com.ceiva.snap.PhotoFragment.showProgress(PhotoFragment.java:196)
at com.ceiva.snap.PhotoFragment$1.pictureRequestSuccessful(PhotoFragment.java:180)
at com.ceiva.snap.cws.CEIVAWebServices$22.onResponse(CEIVAWebServices.java:829)
at com.ceiva.snap.cws.CEIVAWebServices$22.onResponse(CEIVAWebServices.java:820)
at com.ceiva.snap.cws.CEIVAImageRequest.deliverResponse(CEIVAImageRequest.java:235)
at com.ceiva.snap.cws.CEIVAImageRequest.deliverResponse(CEIVAImageRequest.java:52)
at com.android.volley.ExecutorDelivery$ResponseDeliveryRunnable.run(ExecutorDelivery.java:99)
at android.os.Handler.handleCallback(Handler.java:739)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:145)
at android.app.ActivityThread.main(ActivityThread.java:5942)
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1399)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1194)
Log cat2：
java.lang.RuntimeException: Canvas: trying to use a recycled bitmap android.graphics.Bitmap@9e161c3
at android.graphics.Canvas.throwIfCannotDraw(Canvas.java:1225)
at android.graphics.Canvas.drawBitmap(Canvas.java:1312)
at android.graphics.Bitmap.createBitmap(Bitmap.java:863)
at android.graphics.Bitmap.createScaledBitmap(Bitmap.java:719)
at com.ceiva.snap.DeviceImageAdapter.getView(DeviceImageAdapter.java:302)
at android.widget.AbsListView.obtainView(AbsListView.java:2823)
at android.widget.GridView.makeAndAddView(GridView.java:1437)
at android.widget.GridView.makeRow(GridView.java:361)
at android.widget.GridView.fillDown(GridView.java:302)
at android.widget.GridView.fillSpecific(GridView.java:586)
at android.widget.GridView.layoutChildren(GridView.java:1291)
at android.widget.AbsListView.onLayout(AbsListView.java:2627)
at android.view.View.layout(View.java:16711)
at android.view.ViewGroup.layout(ViewGroup.java:5328)
at android.widget.FrameLayout.layoutChildren(FrameLayout.java:573)
at android.widget.FrameLayout.onLayout(FrameLayout.java:508)
at android.view.View.layout(View.java:16711)
at android.view.ViewGroup.layout(ViewGroup.java:5328)
at android.widget.FrameLayout.layoutChildren(FrameLayout.java:573)
at android.widget.FrameLayout.onLayout(FrameLayout.java:508)
at android.view.View.layout(View.java:16711)
at android.view.ViewGroup.layout(ViewGroup.java:5328)
at android.support.v4.widget.DrawerLayout.onLayout(DrawerLayout.java:907)
at android.view.View.layout(View.java:16711)
at android.view.ViewGroup.layout(ViewGroup.java:5328)
at android.widget.FrameLayout.layoutChildren(FrameLayout.java:573)
at android.widget.FrameLayout.onLayout(FrameLayout.java:508)
at android.view.View.layout(View.java:16711)
at android.view.ViewGroup.layout(ViewGroup.java:5328)
at android.support.v7.internal.widget.ActionBarOverlayLayout.onLayout(ActionBarOverlayLayout.java:493)
at android.view.View.layout(View.java:16711)
at android.view.ViewGroup.layout(ViewGroup.java:5328)
at android.widget.FrameLayout.layoutChildren(FrameLayout.java:573)
at android.widget.FrameLayout.onLayout(FrameLayout.java:508)
at android.view.View.layout(View.java:16711)
at android.view.ViewGroup.layout(ViewGroup.java:5328)
at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1702)
at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1556)
at android.widget.LinearLayout.onLayout(LinearLayout.java:1465)
at android.view.View.layout(View.java:16711)
at android.view.ViewGroup.layout(ViewGroup.java:5328)
at android.widget.FrameLayout.layoutChildren(FrameLayout.java:573)
at android.widget.FrameLayout.onLayout(FrameLayout.java:508)
at android.view.View.layout(View.java:16711)
at android.view.ViewGroup.layout(ViewGroup.java:5328)
at android.view.ViewRootImpl.performLayout(ViewRootImpl.java:2319)
at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:2032)
at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1191)
at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:6642)
at android.view.Choreographer$CallbackRecord.run(Choreographer.java:777)
at android.view.Choreographer.doCallbacks(Choreographer.java:590)
at android.view.Choreographer.doFrame(Choreographer.java:560)
at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:763)
at android.os.Handler.handleCallback(Handler.java:739)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:145)
at android.app.ActivityThread.main(ActivityThread.java:5942)
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1399)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1194)