我使用android.support.v4.util.ArrayMap
像这样
ArrayMap<String, ArrayList<Object>> group = new ArrayMap<>();
但我调用ArrayMap.put(key,value)
在 allocArrays(final int size) 方法中抛出 ClassCastException。
private void allocArrays(final int size) {
if (size == (BASE_SIZE*2)) {
synchronized (ArrayMap.class) {
if (mTwiceBaseCache != null) {
final Object[] array = mTwiceBaseCache;
mArray = array;
mTwiceBaseCache = (Object[])array[0];
mHashes = (int[])array[1];
array[0] = array[1] = null;
mTwiceBaseCacheSize--;
if (DEBUG) Log.d(TAG, "Retrieving 2x cache " + mHashes
+ " now have " + mTwiceBaseCacheSize + " entries");
return;
}
}
} else if (size == BASE_SIZE) {
synchronized (ArrayMap.class) {
if (mBaseCache != null) {
final Object[] array = mBaseCache;
mArray = array;
mBaseCache = (Object[])array[0];
mHashes = (int[])array[1];
array[0] = array[1] = null;
mBaseCacheSize--;
if (DEBUG) Log.d(TAG, "Retrieving 1x cache " + mHashes
+ " now have " + mBaseCacheSize + " entries");
return;
}
}
}
mHashes = new int[size];
mArray = new Object[size<<1];
}
应用程序在此行崩溃mBaseCache = (Object[])array[0];
非常感谢!
最佳答案
问题的原因是多线程。
此错误已修复 https://issuetracker.google.com/issues/37114373 更新支持V25.4.0已修复
关于java - android ArrayMap 抛出 java.lang.ClassCastException : java. lang.String 无法转换为 java.lang.Object[]，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/39343332/