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我遇到這個錯誤相當頻繁方法類型...訪問類的私有方法尤其是當......真不知道這是怎麼回事？無論是我能找到谷歌太多的解釋..W/dalvikvm：VFY：調用類型不匹配的
我只是張貼導致此異常的例子：
我有一個SyncAdapter，這裏是onPerformSync方法導致崩潰..
@Override
@SuppressLint("NewApi")
public void onPerformSync(Account account, Bundle extras, String authority,
ContentProviderClient provider, SyncResult syncResult) {
// some code...
HmacSHA224 mac = new HmacSHA224(accessToken.getBytes());
JSONArray entries = new JSONArray();
JSONArray hashes = null;
String lastName = null;
// some other code
}
HmacSHA224是我定義如下的自定義類：
public class HmacSHA224 {
private SHA224 mMessageDigest;
private byte[] mKey;
public HmacSHA224(byte[] key) {
mMessageDigest = new SHA224();
mKey = key;
}
public byte[] hash(byte[] message) {
int blockSize = 64;
int digestSize = 28;
if (mKey.length > blockSize) {
mKey = mMessageDigest.digest(mKey);
}
if (mKey.length < blockSize) {
byte[] k = new byte[blockSize];
System.arraycopy(mKey, 0, k, 0, mKey.length);
mKey = k;
}
byte[] o = new byte[blockSize + digestSize];
byte[] i = new byte[blockSize + message.length];
for (int n = 0; n < blockSize; n++) {
o[n] = (byte)(mKey[n]^0x5c);
i[n] = (byte)(mKey[n]^0x36);
}
System.arraycopy(message, 0, i, blockSize, message.length);
System.arraycopy(mMessageDigest.digest(i), 0, o, blockSize, digestSize);
return mMessageDigest.digest(o);
}
}
和SHA224類：
public final class SHA224 extends MessageDigestSpi {
private static int[] H = { some values };
private static int[] K = { some values };
private ByteBuffer dataBuf = ByteBuffer.allocate(64);
private int length = 0;
private int[] h = H.clone();
private void processChunk() {
dataBuf.rewind();
int[] w = new int[64];
for (int i = 0; i < 16; i++)
w[i] = dataBuf.getInt();
dataBuf.clear();
for (int i = 16; i < 64; i++) {
int s0 = w[i - 15];
s0 = ((s0 >>> 7) | (s0 << 25))^((s0 >>> 18) | (s0 << 14))^(s0 >>> 3);
int s1 = w[i - 2];
s1 = ((s1 >>> 17) | (s1 << 15))^((s1 >>> 19) | (s1 << 13))^(s1 >>> 10);
w[i] = w[i - 16] + s0 + w[i - 7] + s1;
}
int a = this.h[0], b = this.h[1], c = this.h[2], d = this.h[3],
e = this.h[4], f = this.h[5], g = this.h[6], h = this.h[7];
for (int i = 0; i < 64; i++) {
int s0 = ((a >>> 2) | (a << 30))^((a >>> 13) | (a << 19))^((a >>> 22) | (a << 10));
int maj = (a & b)^(a & c)^(b & c);
int t2 = s0 + maj;
int s1 = ((e >>> 6) | (e << 26))^((e >>> 11) | (e << 21))^((e >>> 25) | (e << 7));
int ch = (e & f)^((~e) & g);
int t1 = h + s1 + ch + K[i] + w[i];
h = g;
g = f;
f = e;
e = d + t1;
d = c;
c = b;
b = a;
a = t1 + t2;
}
this.h[0] += a;
this.h[1] += b;
this.h[2] += c;
this.h[3] += d;
this.h[4] += e;
this.h[5] += f;
this.h[6] += g;
this.h[7] += h;
}
@Override
protected byte[] engineDigest() {
long bitLength = length * 8L;
engineUpdate((byte) 0x80);
for (; (length + 8) % 64 != 0;)
engineUpdate((byte) 0);
dataBuf.putLong(bitLength);
processChunk();
ByteBuffer result = ByteBuffer.allocate(28);
for (int i = 0; i < 7; i++)
result.putInt(h[i]);
engineReset();
return result.array();
}
@Override
protected void engineReset() {
dataBuf.clear();
length = 0;
h = H.clone();
}
@Override
protected void engineUpdate(byte src) {
dataBuf.put(src);
length += 1;
if (length % 64 == 0)
processChunk();
}
@Override
protected void engineUpdate(byte[] src, int offset, int count) {
for (int i = offset; i < offset + count; i++)
engineUpdate(src[i]);
}
public byte[] digest(byte[] input) {
engineUpdate(input, 0, input.length);
return engineDigest();
}
}
我發現，當我發起的MAC值的崩潰發生..錯誤跟蹤到
VFY：駁回林/com/example/utils/SHA224;.engineDigest（）
UPDATE：
我有以下日誌：
09-03 14:38:59.841 25084-25134/com.example.android:sync W/dalvikvm﹕ VFY: invoke type does not match method type of Lcom/example/android/utils/SHA224;.processChunk
09-03 14:38:59.841 25084-25134/com.example.android:sync W/dalvikvm﹕ VFY: rejecting opcode 0x6f at 0x002b
09-03 14:38:59.841 25084-25134/com.example.android:sync W/dalvikvm﹕ VFY: rejected Lcom/example/android/utils/SHA224;.engineDigest()[B
09-03 14:38:59.841 25084-25134/com.example.android:sync W/dalvikvm﹕ Verifier rejected class Lcom/example/android/utils/SHA224;
09-03 14:38:59.841 25084-25134/com.example.android:sync W/dalvikvm﹕ threadid=23: thread exiting with uncaught exception (group=0x415daba8)
09-03 14:38:59.841 25084-25134/com.example.android:sync W/System.err﹕ java.lang.VerifyError: com/example/android/utils/SHA224
09-03 14:38:59.841 25084-25134/com.example.android:sync W/System.err﹕ at com.example.android.utils.HmacSHA224.<init>(HmacSHA224.java:5)
09-03 14:38:59.841 25084-25134/com.example.android:sync W/System.err﹕ at com.example.android.adapters.SyncAdapter.onPerformSync(SyncAdapter.java:71)
09-03 14:38:59.841 25084-25134/com.example.android:sync W/System.err﹕ at android.content.AbstractThreadedSyncAdapter$SyncThread.run(AbstractThreadedSyncAdapter.java:259)
09-03 14:38:59.851 25084-25134/com.example.android:sync E/AndroidRuntime﹕ FATAL EXCEPTION: SyncAdapterThread-1
Process: com.example.android:sync, PID: 25084
java.lang.VerifyError: com/example/android/utils/SHA224
at com.example.android.utils.HmacSHA224.<init>(HmacSHA224.java:5)
at com.example.android.adapters.SyncAdapter.onPerformSync(SyncAdapter.java:71)
at android.content.AbstractThreadedSyncAdapter$SyncThread.run(AbstractThreadedSyncAdapter.java:259)
再次更新 所以問題就出在processChunk（）方法，當改爲保護（而不是私人）崩潰消失。但！！！我想知道爲什麼它的行爲這樣。爲什麼我不能保留一些方法私人和同一個類中調用...
你可以發表一些關於你所看到的錯誤的更多信息（stacktrace的複製粘貼會很好）以及你的'SHA224'類的構造函數嗎？ 您是在給定設備上自己遇到過這個問題的，還是僅在遠程聚合日誌（如Google Play控制檯）中看到過它？ – desseim 2014-09-03 08:34:47
@desseim請看看添加的日誌。 SHA224來自Android，而不是我的代碼。我不是遠程地在設備上遇到這個問題謝謝您的幫助！ – xialin 2014-09-03 08:46:05
Android API中沒有'SHA224'類，如果你看看堆棧消息，你會看到它在'com.example.android.utils'包中，它與你的'HmacSHA224'類是相同的包。 我相信'SHA224'類實例的初始化有問題。 – desseim 2014-09-03 09:07:24