Java “无法运行程序”\ndk build.cmd";:发射失败
我从未在ndk上工作过。但我有一个使用ndk的项目 它给了我Java “无法运行程序”\ndk build.cmd";:发射失败,java,android,c++,eclipse,android-ndk,Java,Android,C++,Eclipse,Android Ndk,我从未在ndk上工作过。但我有一个使用ndk的项目 它给了我java.lang.UnsatifiedLink错误:未找到本机方法: 我试着在谷歌上搜索。我有很多链接 但所有这些都与jni.cpp文件相关 但我的错误在java文件中。因此,我无法找到如何纠正它 "java.lang.UnsatisfiedLinkError: Native method not found: il.co.telavivapp2u.onceapponatime.SharedResources.ocvBitmapPre
java.lang.UnsatifiedLink错误:未找到本机方法:
我试着在谷歌上搜索。我有很多链接
但所有这些都与jni.cpp
文件相关
但我的错误在java文件中。因此,我无法找到如何纠正它
"java.lang.UnsatisfiedLinkError: Native method not found: il.co.telavivapp2u.onceapponatime.SharedResources.ocvBitmapPreMultAlpha:(Landroid/graphics/Bitmap;Landroid/graphics/Bitmap;)
我集成了NDK。
这个项目是由另一个开发者完成的
我们正在添加更多的功能。
这部分是由以前的开发人员完成的
我刚刚添加了Google搜索API活动和Gallery图像活动,它们将在网格上显示图像。以前的开发人员在drawable文件夹中放置了一些图像,并将其显示在gallery视图中。无论他做了什么,它都运行得很好。即使现在也一样。但我补充说,同样的事情不会发生
在app drawable gallery view上单击图像后,它将转到相机活动,该活动将以所选图像为背景捕获图像。然后我们可以编辑并保存该图像。但在手机画廊和谷歌搜索图像的情况下,在抓拍应用程序后会出现问题
我已经设置NDK路径和变量到Eclipse,我还安装了C+C++插件< /P> 还有控制台正在显示
Cannot run program "\ndk-build.cmd": Launching failed .
我无法理解我在哪里犯了错误。请帮帮我
ANR发生在207行
这是我的代码:
package il.co.telavivapp2u.onceapponatime;
import java.io.File;
import java.io.FileOutputStream;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.Locale;
import android.annotation.SuppressLint;
import android.app.Activity;
import android.content.Context;
import android.content.res.Configuration;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Point;
import android.os.Environment;
import android.util.Log;
import android.view.Display;
public class SharedResources {
public static Bitmap bmpOld = null;
public static Bitmap bmpOldScaled = null;
public static Bitmap bmpNew = null;
public static Bitmap bmpNewScaled = null;
public static int scaledX = 0, scaledY = 0;
public static int dispX = 0, dispY = 0;
public static int fullX = 0, fullY = 0;
public static int picX = 0, picY = 0;
public static String fileDir = "/OnceAppOnATime/";
public static String fileTempDir = fileDir + "/.temp/";
public static String fileTempNew = fileTempDir + "/temp-new.jpg";
public static String fileTempOld = fileTempDir + "/temp-old.jpg";
public static String fileTempMask = fileTempDir + "/temp-mask.jpg";
public static String fileTempBlend = fileTempDir + "/temp-blend.jpg";
public static String fileTempRetouch = fileTempDir + "/temp-retouch.jpg";
//public static String fileLastBlend = "";
public static BitmapFactory.Options op = new BitmapFactory.Options();
public static Locale localeHebrew = null;
public static int taskID = -1;
public static boolean Init(Activity activity) { return Init(activity, false); }
@SuppressLint("NewApi")
@SuppressWarnings("deprecation")
public static boolean Init(Activity activity, boolean force) {
if (dispX > 0 && dispY > 0) { // Don't re-init to avoid wrong file names
if (!force)
return false;
} else {
fileDir = Environment.getExternalStorageDirectory() + fileDir;
fileTempDir = Environment.getExternalStorageDirectory() + fileTempDir;
fileTempNew = Environment.getExternalStorageDirectory() + fileTempNew;
fileTempOld = Environment.getExternalStorageDirectory() + fileTempOld;
fileTempMask = Environment.getExternalStorageDirectory() + fileTempMask;
fileTempBlend = Environment.getExternalStorageDirectory() + fileTempBlend;
fileTempRetouch = Environment.getExternalStorageDirectory() + fileTempRetouch;
}
taskID = activity.getTaskId();
// Find Hebrew locale, if available
Locale availableLocales[] = Locale.getAvailableLocales();
for (int i = 0; i < availableLocales.length; ++i) {
String lang = availableLocales[i].getLanguage();
if (lang.equals("he") || lang.equals("iw")) {
localeHebrew = availableLocales[i];
break;
}
}
op.inPreferredConfig = Bitmap.Config.ARGB_8888;
//op.inScaled = false; // Not needed if loading bitmaps from drawable-nodpi
op.inMutable = true;
Display display = activity.getWindowManager().getDefaultDisplay();
if (android.os.Build.VERSION.SDK_INT < android.os.Build.VERSION_CODES.HONEYCOMB_MR2) {
dispX = display.getWidth();
dispY = display.getHeight();
} else {
Point dispSize = new Point();
display.getSize(dispSize);
dispX = dispSize.x;
dispY = dispSize.y;
}
Log.w("Display Size", dispX + "x" + dispY);
//scaledX = dispX / 2; scaledY = dispY / 2;
scaledX = dispX; scaledY = dispY;
return true;
}
public static void setLocale(Activity activity, Locale locale) {
// This doesn't work reliably
Locale.setDefault(locale);
Configuration config = new Configuration();
config.locale = locale;
activity.getBaseContext().getResources().updateConfiguration(config,
activity.getBaseContext().getResources().getDisplayMetrics());
}
public static boolean haveScaling() {
return (dispX != scaledX || dispY != scaledY);
}
public static void SaveTempBitmap(Bitmap bitmap, String filename) {
try {
new File(fileTempDir).mkdirs();
FileOutputStream out = new FileOutputStream(filename);
bitmap.compress(Bitmap.CompressFormat.JPEG, 98, out);
} catch (Exception e) {
e.printStackTrace();
}
}
public static void RecycleOldBitmaps(boolean full, boolean scaled) {
if (full && bmpOld != null) {
bmpOld.recycle();
bmpOld = null;
}
if (scaled && bmpOldScaled != null) {
bmpOldScaled.recycle();
bmpOldScaled = null;
}
}
public static void RecycleNewBitmaps(boolean full, boolean scaled) {
if (full && bmpNew != null) {
bmpNew.recycle();
bmpNew = null;
}
if (scaled && bmpNewScaled != null) {
bmpNewScaled.recycle();
bmpNewScaled = null;
}
}
// 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
public static int sample2sample[] = new int[] {1, 1, 2, 2, 4, 4, 4, 4, 8, 8, 8, 8, 8, 8, 8, 8, 16,
16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32};
public static Bitmap LoadScaledBitmap(Context ctx, int resId, float fracX, float fracY) {
// See: http://developer.android.com/training/displaying-bitmaps/load-bitmap.html
BitmapFactory.Options opts = new BitmapFactory.Options();
opts.inJustDecodeBounds = true;
BitmapFactory.decodeResource(ctx.getResources(), resId, opts);
int imageHeight = opts.outHeight;
int imageWidth = opts.outWidth;
float requestX = dispX * fracX, requestY = dispY * fracY;
opts.inSampleSize = (int)(Math.min(imageWidth / requestX, imageHeight / requestY));
if (opts.inSampleSize < 0 || opts.inSampleSize > 32) // Sometimes index=2147483647 for some reason...
opts.inSampleSize = 1;
opts.inSampleSize = sample2sample[opts.inSampleSize];
Log.w("Bitmap Decoder", "Samples: " + opts.inSampleSize);
opts.inPreferredConfig = Bitmap.Config.ARGB_8888;
//opts.inScaled = false; // Not needed if loading bitmaps from drawable-nodpi
opts.inMutable = true;
opts.inJustDecodeBounds = false;
return BitmapFactory.decodeResource(ctx.getResources(), resId, opts);
}
public static Bitmap LoadScaledBitmap(String filename, float fracX, float fracY) {
// See: http://developer.android.com/training/displaying-bitmaps/load-bitmap.html
BitmapFactory.Options opts = new BitmapFactory.Options();
opts.inJustDecodeBounds = true;
BitmapFactory.decodeFile(filename, opts);
int imageHeight = opts.outHeight;
int imageWidth = opts.outWidth;
float requestX = dispX * fracX, requestY = dispY * fracY;
opts.inSampleSize = (int)(Math.min(imageWidth / requestX, imageHeight / requestY));
if (opts.inSampleSize < 0 || opts.inSampleSize > 32) // Sometimes index=2147483647 for some reason...
opts.inSampleSize = 1;
opts.inSampleSize = sample2sample[opts.inSampleSize];
Log.w("Bitmap Decoder", "Samples: " + opts.inSampleSize);
opts.inPreferredConfig = Bitmap.Config.ARGB_8888;
//opts.inScaled = false; // Not needed if loading bitmaps from drawable-nodpi
opts.inMutable = true;
opts.inJustDecodeBounds = false;
return BitmapFactory.decodeFile(filename, opts);
}
public static String FileNameNow() {
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd_HH-mm-ss", Locale.ENGLISH);
return fileDir + sdf.format(new Date()) + ".jpg";
}
public static native void ocvBitmapPyramidalBlend(String fNew, String fOld, String fMask, String fBlend, int levels);
public static String ocvBitmapPyramidalBlendTimed(int levels) {
String fBlend = fileTempBlend;//FileNameNow();
long t = System.nanoTime();
ocvBitmapPyramidalBlend(fileTempNew, fileTempOld, fileTempMask, fBlend, levels);
long dt = (System.nanoTime() - t) / 1000; // Microseconds
Log.w("OpenCV", "Blended (pyramidal) bitmaps in " + (dt / 1000.0f) + " ms");
//fileLastBlend = fBlend;
return fBlend;
}
public static native void ocvBitmapPreMultAlpha(Bitmap bitmapImg, Bitmap bitmapMask);
public static void ocvBitmapPreMultAlphaTimed(Bitmap bitmapImg, Bitmap bitmapMask) {
long t = System.nanoTime();
ocvBitmapPreMultAlpha(bitmapImg, bitmapMask);
long dt = (System.nanoTime() - t) / 1000; // Microseconds
Log.i("Native", "Applied premultiplied alpha to bitmap in " + (dt / 1000.0f) + " ms");
}
public static native void ocvBitmapContrastSaturationSet(Bitmap bitmapImg);
public static void ocvBitmapContrastSaturationSetTimed(Bitmap bitmapImg) {
long t = System.nanoTime();
ocvBitmapContrastSaturationSet(bitmapImg);
long dt = (System.nanoTime() - t) / 1000; // Microseconds
Log.i("Native", "Assigned contrast/saturation bitmap in " + (dt / 1000.0f) + " ms");
}
public static native void ocvBitmapContrastSaturationSrc(Bitmap bitmapImg, Bitmap bitmapSrc, float contrast, float saturation);
public static void ocvBitmapContrastSaturationSrcTimed(Bitmap bitmapImg, Bitmap bitmapSrc, float contrast, float saturation) {
long t = System.nanoTime();
ocvBitmapContrastSaturationSrc(bitmapImg, bitmapSrc, contrast, saturation);
long dt = (System.nanoTime() - t) / 1000; // Microseconds
Log.i("Native", "Applied contrast/saturation (from src) to bitmap in " + (dt / 1000.0f) + " ms");
}
public static native void ocvBitmapContrastSaturation(Bitmap bitmapImg, float contrast, float saturation);
public static void ocvBitmapContrastSaturationTimed(Bitmap bitmapImg, float contrast, float saturation) {
long t = System.nanoTime();
ocvBitmapContrastSaturation(bitmapImg, contrast, saturation);
long dt = (System.nanoTime() - t) / 1000; // Microseconds
Log.i("Native", "Applied contrast/saturation to bitmap in " + (dt / 1000.0f) + " ms");
}
}
不满意的链接错误是由于java类和c类之间的桥断开造成的; java中方法的名称应与C/C++类中的方法匹配。 编译时,Java和c/c++之间会创建一个桥接器,所以如果方法名不正确,它将不会响应。 下面是一个例子 injava的方法名如下
public native String Stub(){}
这在JNI中应该是相同的,但在您的应用程序packagename+classname+methodname中,如下所示
JNIEXPORT jstring JNICALL Java_com_packageName_ClassName_MethodName
关键错误是“无法运行程序”ndk build:启动失败”。如果不运行,则不会生成.so,这将导致不满意的链接错误。首先解决ndk构建问题
尝试从“\ndk build.cmd”中删除首字母“\”。当我运行“ndk build.cmd”时,它会工作。- 在新变量系统中添加正确的NDK路径:例如:“ANDROID\u NDK=…”
- 在项目的属性中,在“C/C++Build”的“Build命令:”中,输入以下变量:${ANDROID\u NDK}/NDK-Build.cmd
JNIEXPORT jstring JNICALL Java_com_packageName_ClassName_MethodName