4
在這裏可以從您那裏獲得關於我的問題的建議。這是新的蜜蜂,我從昨天就陷入了這種情況,但無法解決它。 我試圖在JNI中找到2d數組大小,但沒有獲得成功的結果。 我有下面的代碼。請你們能解決我的問題。如何在JNI中找到2維數組大小
JNIEXPORT jint JNICALL Java_com_example_imagejoiner_MyJoiner_test(JNIEnv*
env,
jobject javaThis) {
LOGV("test print");
return 1;
}
JNIEXPORT void JNICALL
Java_com_example_imagejoiner_MyJoiner_joinNative(JNIEnv* env,
jobject javaThis, jobjectArray jfilePaths, jstring jfinalImagePath, int
verticalOverlapPercent, int horizontalOverlapPercent) {
const char *finalImagePath = env->GetStringUTFChars(jfinalImagePath, 0);
const int imageCount = env->GetArrayLength(jfilePaths);
int rows = 1;
int columns = 4;
Mat imageBuff[rows][columns];
/*for (int i = 0; i < imageCount; i++) {
jstring filePath = (jstring) env->GetObjectArrayElement(jfilePaths, i);
const char *rawString = env->GetStringUTFChars(filePath, 0);
LOGV("reading = %s", rawString);
imageBuff[i] = imread(rawString, 1);
if(!imageBuff[i].data) {
LOGV("failed to read = %s", rawString);
}
env->ReleaseStringUTFChars(filePath, rawString);
}*/
//Creating a 2 dimensional array from the lieaner array
int k = 0;
for (int i = 0; i < rows; i++)
{
for (int j = 0; j < columns; j++)
{
jstring filePath = (jstring) env->GetObjectArrayElement(jfilePaths,
k);
const char *rawString = env->GetStringUTFChars(filePath, 0);
LOGV("reading = %s", rawString);
imageBuff[i][j] = imread(rawString, 1);
if(!imageBuff[i][j].data) {
LOGV("failed to read = %s", rawString);
}
env->ReleaseStringUTFChars(filePath, rawString);
k++;
}
}
//Creating a 2 dimensional array from the 2 dimensional array
/*for (int i = 0; i < rows; i++)
{
jstringArray filePath = (jstringArray) env->GetObjectArrayElement(
jfilePaths, i);
for (int j = 0; j < columns; j++)
{
const char *rawString = env->GetStringUTFChars(filePath, j);
LOGV("reading = %s", rawString);
imageBuff[i][j] = imread(rawString, 1);
if(!imageBuff[i][j].data) {
LOGV("failed to read = %s", rawString);
}
env->ReleaseStringUTFChars(filePath, rawString);
}
}*/
這對試圖找到一個數組的大小太多的代碼。你不應該發佈你的所有代碼,只是顯示你的問題的最小數量。 – Coeffect 2015-04-03 02:49:36
因爲你建議我做到了@Coeffect – 2015-04-03 02:57:22