我使用ACRA开发了一个用于崩溃报告的Android应用。尝试为startActivity（）制作动画时出现崩溃。我知道API 16之前不支持ActivityOptions，因此我在应用启动时为android版本添加了检查。
这是Wheel.java的片段：
public static void ini()
{
sdk = android.os.Build.VERSION.SDK_INT;
if(sdk < android.os.Build.VERSION_CODES.JELLY_BEAN)
api16 = true;
else
api16 = false;
}
public static boolean isAPI16()
{
return api16;
}
@SuppressLint("NewApi")
public static Bundle getNextAnimation(Context context)
{
Bundle animation = null;
if(isAr())
animation = ActivityOptions.makeCustomAnimation(context, R.anim.rtl_enter, R.anim.rtl_exit).toBundle();
else
animation = ActivityOptions.makeCustomAnimation(context, R.anim.ltr_enter, R.anim.ltr_exit).toBundle();
return animation;
}
这就是我在应用程序中使用它的方式：
if(Wheel.isAPI16())
startActivity(i);
else
startActivity(i, Wheel.getNextAnimation(getApplicationContext()));
该代码使我崩溃了：
Android Version Phone Error
4.0.3 samsung samsung GT-N7000 java.lang.NoClassDefFoundError: android.app.ActivityOptions : at com.nasseralsalmi.wheel.Wheel.getNextAnimation(Wheel.java:103)
4.0.4 HTC htc_ara HTC One X java.lang.NoClassDefFoundError: android.app.ActivityOptions : at com.nasseralsalmi.wheel.Wheel.getNextAnimation(Wheel.java:101)
然后我试图像这样修复它：
api16 = false;
try
{
Bundle animation = ActivityOptions.makeCustomAnimation(context, R.anim.rtl_enter, R.anim.rtl_exit).toBundle();
}
catch (Exception e) // NoClassDefFoundError
{
api16 = true;
}
不幸：
Android Version Phone Error
4.0.4 samsung google Galaxy Nexus java.lang.NoClassDefFoundError: android.app.ActivityOptions : at com.nasseralsalmi.wheel.Wheel.ini(Wheel.java:50)
最佳答案
问题在于ActivityOptions并非在所有版本中都定义。
该类是在API级别16中添加的。您可以将其包含在项目中，也可以为旧版本开发某些东西。
编辑：ActivityOptions.jar
/*
* Copyright (C) 2012 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package android.app;
import android.content.Context;
import android.graphics.Bitmap;
import android.os.Bundle;
import android.os.Handler;
import android.os.IRemoteCallback;
import android.os.RemoteException;
import android.view.View;
/**
* Helper class for building an options Bundle that can be used with
* {@link android.content.Context#startActivity(android.content.Intent, android.os.Bundle)
* Context.startActivity(Intent, Bundle)} and related methods.
*/
public class ActivityOptions {
/**
* The package name that created the options.
* @hide
*/
public static final String KEY_PACKAGE_NAME = "android:packageName";
/**
* Type of animation that arguments specify.
* @hide
*/
public static final String KEY_ANIM_TYPE = "android:animType";
/**
* Custom enter animation resource ID.
* @hide
*/
public static final String KEY_ANIM_ENTER_RES_ID = "android:animEnterRes";
/**
* Custom exit animation resource ID.
* @hide
*/
public static final String KEY_ANIM_EXIT_RES_ID = "android:animExitRes";
/**
* Bitmap for thumbnail animation.
* @hide
*/
public static final String KEY_ANIM_THUMBNAIL = "android:animThumbnail";
/**
* Start X position of thumbnail animation.
* @hide
*/
public static final String KEY_ANIM_START_X = "android:animStartX";
/**
* Start Y position of thumbnail animation.
* @hide
*/
public static final String KEY_ANIM_START_Y = "android:animStartY";
/**
* Initial width of the animation.
* @hide
*/
public static final String KEY_ANIM_START_WIDTH = "android:animStartWidth";
/**
* Initial height of the animation.
* @hide
*/
public static final String KEY_ANIM_START_HEIGHT = "android:animStartHeight";
/**
* Callback for when animation is started.
* @hide
*/
public static final String KEY_ANIM_START_LISTENER = "android:animStartListener";
/** @hide */
public static final int ANIM_NONE = 0;
/** @hide */
public static final int ANIM_CUSTOM = 1;
/** @hide */
public static final int ANIM_SCALE_UP = 2;
/** @hide */
public static final int ANIM_THUMBNAIL_SCALE_UP = 3;
/** @hide */
public static final int ANIM_THUMBNAIL_SCALE_DOWN = 4;
private String mPackageName;
private int mAnimationType = ANIM_NONE;
private int mCustomEnterResId;
private int mCustomExitResId;
private Bitmap mThumbnail;
private int mStartX;
private int mStartY;
private int mStartWidth;
private int mStartHeight;
private IRemoteCallback mAnimationStartedListener;
/**
* Create an ActivityOptions specifying a custom animation to run when
* the activity is displayed.
*
* @param context Who is defining this. This is the application that the
* animation resources will be loaded from.
* @param enterResId A resource ID of the animation resource to use for
* the incoming activity. Use 0 for no animation.
* @param exitResId A resource ID of the animation resource to use for
* the outgoing activity. Use 0 for no animation.
* @return Returns a new ActivityOptions object that you can use to
* supply these options as the options Bundle when starting an activity.
*/
public static ActivityOptions makeCustomAnimation(Context context,
int enterResId, int exitResId) {
return makeCustomAnimation(context, enterResId, exitResId, null, null);
}
/**
* Create an ActivityOptions specifying a custom animation to run when
* the activity is displayed.
*
* @param context Who is defining this. This is the application that the
* animation resources will be loaded from.
* @param enterResId A resource ID of the animation resource to use for
* the incoming activity. Use 0 for no animation.
* @param exitResId A resource ID of the animation resource to use for
* the outgoing activity. Use 0 for no animation.
* @param handler If <var>listener</var> is non-null this must be a valid
* Handler on which to dispatch the callback; otherwise it should be null.
* @param listener Optional OnAnimationStartedListener to find out when the
* requested animation has started running. If for some reason the animation
* is not executed, the callback will happen immediately.
* @return Returns a new ActivityOptions object that you can use to
* supply these options as the options Bundle when starting an activity.
* @hide
*/
public static ActivityOptions makeCustomAnimation(Context context,
int enterResId, int exitResId, Handler handler, OnAnimationStartedListener listener) {
ActivityOptions opts = new ActivityOptions();
opts.mPackageName = context.getPackageName();
opts.mAnimationType = ANIM_CUSTOM;
opts.mCustomEnterResId = enterResId;
opts.mCustomExitResId = exitResId;
opts.setListener(handler, listener);
return opts;
}
private void setListener(Handler handler, OnAnimationStartedListener listener) {
if (listener != null) {
final Handler h = handler;
final OnAnimationStartedListener finalListener = listener;
mAnimationStartedListener = new IRemoteCallback.Stub() {
@Override public void sendResult(Bundle data) throws RemoteException {
h.post(new Runnable() {
@Override public void run() {
finalListener.onAnimationStarted();
}
});
}
};
}
}
/**
* Callback for use with {@link ActivityOptions#makeThumbnailScaleUpAnimation}
* to find out when the given animation has started running.
* @hide
*/
public interface OnAnimationStartedListener {
void onAnimationStarted();
}
/**
* Create an ActivityOptions specifying an animation where the new
* activity is scaled from a small originating area of the screen to
* its final full representation.
*
* <p>If the Intent this is being used with has not set its
* {@link android.content.Intent#setSourceBounds Intent.setSourceBounds},
* those bounds will be filled in for you based on the initial
* bounds passed in here.
*
* @param source The View that the new activity is animating from. This
* defines the coordinate space for <var>startX</var> and <var>startY</var>.
* @param startX The x starting location of the new activity, relative to <var>source</var>.
* @param startY The y starting location of the activity, relative to <var>source</var>.
* @param startWidth The initial width of the new activity.
* @param startHeight The initial height of the new activity.
* @return Returns a new ActivityOptions object that you can use to
* supply these options as the options Bundle when starting an activity.
*/
public static ActivityOptions makeScaleUpAnimation(View source,
int startX, int startY, int startWidth, int startHeight) {
ActivityOptions opts = new ActivityOptions();
opts.mPackageName = source.getContext().getPackageName();
opts.mAnimationType = ANIM_SCALE_UP;
int[] pts = new int[2];
source.getLocationOnScreen(pts);
opts.mStartX = pts[0] + startX;
opts.mStartY = pts[1] + startY;
opts.mStartWidth = startWidth;
opts.mStartHeight = startHeight;
return opts;
}
/**
* Create an ActivityOptions specifying an animation where a thumbnail
* is scaled from a given position to the new activity window that is
* being started.
*
* <p>If the Intent this is being used with has not set its
* {@link android.content.Intent#setSourceBounds Intent.setSourceBounds},
* those bounds will be filled in for you based on the initial
* thumbnail location and size provided here.
*
* @param source The View that this thumbnail is animating from. This
* defines the coordinate space for <var>startX</var> and <var>startY</var>.
* @param thumbnail The bitmap that will be shown as the initial thumbnail
* of the animation.
* @param startX The x starting location of the bitmap, relative to <var>source</var>.
* @param startY The y starting location of the bitmap, relative to <var>source</var>.
* @return Returns a new ActivityOptions object that you can use to
* supply these options as the options Bundle when starting an activity.
*/
public static ActivityOptions makeThumbnailScaleUpAnimation(View source,
Bitmap thumbnail, int startX, int startY) {
return makeThumbnailScaleUpAnimation(source, thumbnail, startX, startY, null);
}
/**
* Create an ActivityOptions specifying an animation where a thumbnail
* is scaled from a given position to the new activity window that is
* being started.
*
* @param source The View that this thumbnail is animating from. This
* defines the coordinate space for <var>startX</var> and <var>startY</var>.
* @param thumbnail The bitmap that will be shown as the initial thumbnail
* of the animation.
* @param startX The x starting location of the bitmap, relative to <var>source</var>.
* @param startY The y starting location of the bitmap, relative to <var>source</var>.
* @param listener Optional OnAnimationStartedListener to find out when the
* requested animation has started running. If for some reason the animation
* is not executed, the callback will happen immediately.
* @return Returns a new ActivityOptions object that you can use to
* supply these options as the options Bundle when starting an activity.
* @hide
*/
public static ActivityOptions makeThumbnailScaleUpAnimation(View source,
Bitmap thumbnail, int startX, int startY, OnAnimationStartedListener listener) {
return makeThumbnailAnimation(source, thumbnail, startX, startY, listener, true);
}
/**
* Create an ActivityOptions specifying an animation where an activity window
* is scaled from a given position to a thumbnail at a specified location.
*
* @param source The View that this thumbnail is animating to. This
* defines the coordinate space for <var>startX</var> and <var>startY</var>.
* @param thumbnail The bitmap that will be shown as the final thumbnail
* of the animation.
* @param startX The x end location of the bitmap, relative to <var>source</var>.
* @param startY The y end location of the bitmap, relative to <var>source</var>.
* @param listener Optional OnAnimationStartedListener to find out when the
* requested animation has started running. If for some reason the animation
* is not executed, the callback will happen immediately.
* @return Returns a new ActivityOptions object that you can use to
* supply these options as the options Bundle when starting an activity.
* @hide
*/
public static ActivityOptions makeThumbnailScaleDownAnimation(View source,
Bitmap thumbnail, int startX, int startY, OnAnimationStartedListener listener) {
return makeThumbnailAnimation(source, thumbnail, startX, startY, listener, false);
}
private static ActivityOptions makeThumbnailAnimation(View source,
Bitmap thumbnail, int startX, int startY, OnAnimationStartedListener listener,
boolean scaleUp) {
ActivityOptions opts = new ActivityOptions();
opts.mPackageName = source.getContext().getPackageName();
opts.mAnimationType = scaleUp ? ANIM_THUMBNAIL_SCALE_UP : ANIM_THUMBNAIL_SCALE_DOWN;
opts.mThumbnail = thumbnail;
int[] pts = new int[2];
source.getLocationOnScreen(pts);
opts.mStartX = pts[0] + startX;
opts.mStartY = pts[1] + startY;
opts.setListener(source.getHandler(), listener);
return opts;
}
private ActivityOptions() {
}
/** @hide */
public ActivityOptions(Bundle opts) {
mPackageName = opts.getString(KEY_PACKAGE_NAME);
mAnimationType = opts.getInt(KEY_ANIM_TYPE);
if (mAnimationType == ANIM_CUSTOM) {
mCustomEnterResId = opts.getInt(KEY_ANIM_ENTER_RES_ID, 0);
mCustomExitResId = opts.getInt(KEY_ANIM_EXIT_RES_ID, 0);
mAnimationStartedListener = IRemoteCallback.Stub.asInterface(
opts.getIBinder(KEY_ANIM_START_LISTENER));
} else if (mAnimationType == ANIM_SCALE_UP) {
mStartX = opts.getInt(KEY_ANIM_START_X, 0);
mStartY = opts.getInt(KEY_ANIM_START_Y, 0);
mStartWidth = opts.getInt(KEY_ANIM_START_WIDTH, 0);
mStartHeight = opts.getInt(KEY_ANIM_START_HEIGHT, 0);
} else if (mAnimationType == ANIM_THUMBNAIL_SCALE_UP ||
mAnimationType == ANIM_THUMBNAIL_SCALE_DOWN) {
mThumbnail = (Bitmap)opts.getParcelable(KEY_ANIM_THUMBNAIL);
mStartX = opts.getInt(KEY_ANIM_START_X, 0);
mStartY = opts.getInt(KEY_ANIM_START_Y, 0);
mAnimationStartedListener = IRemoteCallback.Stub.asInterface(
opts.getIBinder(KEY_ANIM_START_LISTENER));
}
}
/** @hide */
public String getPackageName() {
return mPackageName;
}
/** @hide */
public int getAnimationType() {
return mAnimationType;
}
/** @hide */
public int getCustomEnterResId() {
return mCustomEnterResId;
}
/** @hide */
public int getCustomExitResId() {
return mCustomExitResId;
}
/** @hide */
public Bitmap getThumbnail() {
return mThumbnail;
}
/** @hide */
public int getStartX() {
return mStartX;
}
/** @hide */
public int getStartY() {
return mStartY;
}
/** @hide */
public int getStartWidth() {
return mStartWidth;
}
/** @hide */
public int getStartHeight() {
return mStartHeight;
}
/** @hide */
public IRemoteCallback getOnAnimationStartListener() {
return mAnimationStartedListener;
}
/** @hide */
public void abort() {
if (mAnimationStartedListener != null) {
try {
mAnimationStartedListener.sendResult(null);
} catch (RemoteException e) {
}
}
}
/** @hide */
public static void abort(Bundle options) {
if (options != null) {
(new ActivityOptions(options)).abort();
}
}
/**
* Update the current values in this ActivityOptions from those supplied
* in <var>otherOptions</var>. Any values
* defined in <var>otherOptions</var> replace those in the base options.
*/
public void update(ActivityOptions otherOptions) {
if (otherOptions.mPackageName != null) {
mPackageName = otherOptions.mPackageName;
}
switch (otherOptions.mAnimationType) {
case ANIM_CUSTOM:
mAnimationType = otherOptions.mAnimationType;
mCustomEnterResId = otherOptions.mCustomEnterResId;
mCustomExitResId = otherOptions.mCustomExitResId;
mThumbnail = null;
if (otherOptions.mAnimationStartedListener != null) {
try {
otherOptions.mAnimationStartedListener.sendResult(null);
} catch (RemoteException e) {
}
}
mAnimationStartedListener = otherOptions.mAnimationStartedListener;
break;
case ANIM_SCALE_UP:
mAnimationType = otherOptions.mAnimationType;
mStartX = otherOptions.mStartX;
mStartY = otherOptions.mStartY;
mStartWidth = otherOptions.mStartWidth;
mStartHeight = otherOptions.mStartHeight;
if (otherOptions.mAnimationStartedListener != null) {
try {
otherOptions.mAnimationStartedListener.sendResult(null);
} catch (RemoteException e) {
}
}
mAnimationStartedListener = null;
break;
case ANIM_THUMBNAIL_SCALE_UP:
case ANIM_THUMBNAIL_SCALE_DOWN:
mAnimationType = otherOptions.mAnimationType;
mThumbnail = otherOptions.mThumbnail;
mStartX = otherOptions.mStartX;
mStartY = otherOptions.mStartY;
if (otherOptions.mAnimationStartedListener != null) {
try {
otherOptions.mAnimationStartedListener.sendResult(null);
} catch (RemoteException e) {
}
}
mAnimationStartedListener = otherOptions.mAnimationStartedListener;
break;
}
}
/**
* Returns the created options as a Bundle, which can be passed to
* {@link android.content.Context#startActivity(android.content.Intent, android.os.Bundle)
* Context.startActivity(Intent, Bundle)} and related methods.
* Note that the returned Bundle is still owned by the ActivityOptions
* object; you must not modify it, but can supply it to the startActivity
* methods that take an options Bundle.
*/
public Bundle toBundle() {
Bundle b = new Bundle();
if (mPackageName != null) {
b.putString(KEY_PACKAGE_NAME, mPackageName);
}
switch (mAnimationType) {
case ANIM_CUSTOM:
b.putInt(KEY_ANIM_TYPE, mAnimationType);
b.putInt(KEY_ANIM_ENTER_RES_ID, mCustomEnterResId);
b.putInt(KEY_ANIM_EXIT_RES_ID, mCustomExitResId);
b.putIBinder(KEY_ANIM_START_LISTENER, mAnimationStartedListener
!= null ? mAnimationStartedListener.asBinder() : null);
break;
case ANIM_SCALE_UP:
b.putInt(KEY_ANIM_TYPE, mAnimationType);
b.putInt(KEY_ANIM_START_X, mStartX);
b.putInt(KEY_ANIM_START_Y, mStartY);
b.putInt(KEY_ANIM_START_WIDTH, mStartWidth);
b.putInt(KEY_ANIM_START_HEIGHT, mStartHeight);
break;
case ANIM_THUMBNAIL_SCALE_UP:
case ANIM_THUMBNAIL_SCALE_DOWN:
b.putInt(KEY_ANIM_TYPE, mAnimationType);
b.putParcelable(KEY_ANIM_THUMBNAIL, mThumbnail);
b.putInt(KEY_ANIM_START_X, mStartX);
b.putInt(KEY_ANIM_START_Y, mStartY);
b.putIBinder(KEY_ANIM_START_LISTENER, mAnimationStartedListener
!= null ? mAnimationStartedListener.asBinder() : null);
break;
}
return b;
}
}