我已按照Github上AndroidScannerDemo的构建说明进行操作。
我成功构建了AndroidScannerDemo。然后，我想通过从Github上的SimpleTesseractExample导入OCR库来开发此应用程序。我正在尝试运行测试应用程序。该应用程序可以启动，但是当我尝试访问摄像头和图库模式时，它将出现以下异常：
testRunner中的错误：
E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.scanner.demo, PID: 2715
java.lang.UnsatisfiedLinkError: com.android.tools.fd.runtime.IncrementalClassLoader$DelegateClassLoader[DexPathList[[dex file "/data/data/com.scanner.demo/files/instant-run/dex/slice-support-annotations-23.2.1_3e4fb588ccc5090e3d7674f4d618c6c58911a463-classes.dex", dex file "/data/data/com.scanner.demo/files/instant-run/dex/slice-slice_9-classes.dex", dex file "/data/data/com.scanner.demo/files/instant-run/dex/slice-slice_8-classes.dex", dex file "/data/data/com.scanner.demo/files/instant-run/dex/slice-slice_7-classes.dex", dex file "/data/data/com.scanner.demo/files/instant-run/dex/slice-slice_6-classes.dex", dex file "/data/data/com.scanner.demo/files/instant-run/dex/slice-slice_5-classes.dex", dex file "/data/data/com.scanner.demo/files/instant-run/dex/slice-slice_4-classes.dex", dex file "/data/data/com.scanner.demo/files/instant-run/dex/slice-slice_3-classes.dex", dex file "/data/data/com.scanner.demo/files/instant-run/dex/slice-slice_2-classes.dex", dex file "/data/data/com.scanner.demo/files/instant-run/dex/slice-slice_1-classes.dex", dex file "/data/data/com.scanner.demo/files/instant-run/dex/slice-slice_0-classes.dex", dex file "/data/data/com.scanner.demo/files/instant-run/dex/slice-internal_impl-23.2.1_95668bb7e1c637bd79cf411dae8840e187175822-classes.dex", dex file "/data/data/com.scanner.demo/files/instant-run/dex/slice-com.rmtheis-tess-two-5.4.1_e5cb86e300070c39241b9a43567ee2efb208d508-classes.dex", dex file "/data/data/com.scanner.demo/files/instant-run/dex/slice-com.android.support-support-vector-drawable-23.2.1_6c016aaa8587fb0461cb7e32ce3f36bda91ced6b-classes.dex", dex file "/data/data/com.scanner.demo/files/instant-run/dex/slice-com.android.support-support-v4-23.2.1_387cf51515861ffabd82d96d9419f72e885ab771-classes.dex", dex file "/data/data/com.scanner.demo/files/instant-run/dex/slice-com.android.support-appcompat-v7-23.2.1_8d29c9636ac8f816df67405c13d3515c565cd287-classes.dex", dex file "/data/data/com.scanner.demo/files/instant-run/dex/slice-com.android.support-animated-vector-drawable-23.2.1_96909a566032fc8bdb0819e184295a7955082571-classes.dex"],nativeLibraryDirectories=[/data/app/com.scanner.demo-2/lib/x86_64, /system/fake-libs64, /data/app/com.scanner.demo-2/base.apk!/lib/x86_64, /system/lib64, /vendor/lib64]]] couldn't find "libopencv_java3.so"
at java.lang.Runtime.loadLibrary0(Runtime.java:984)
at java.lang.System.loadLibrary(System.java:1530)
at com.scanlibrary.ScanActivity.<clinit>(ScanActivity.java:73)
at java.lang.Class.newInstance(Native Method)
at android.app.Instrumentation.newActivity(Instrumentation.java:1078)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2557)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2726)
at android.app.ActivityThread.-wrap12(ActivityThread.java)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1477)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:154)
at android.app.ActivityThread.main(ActivityThread.java:6119)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:886)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:776)
当我在依赖项部分中将这一行添加到build.gradle中时会发生
compile 'com.rmtheis:tess-two:5.4.1'
MainActivity代码：
package com.scanner.demo;
import android.app.Activity;
import android.content.Intent;
import android.content.res.AssetManager;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.net.Uri;
import android.os.Bundle;
import android.provider.MediaStore;
import android.support.v7.app.ActionBarActivity;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.TextView;
import com.scanlibrary.ScanActivity;
import com.scanlibrary.ScanConstants;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import com.googlecode.tesseract.android.TessBaseAPI; //OCR
public class MainActivity extends ActionBarActivity {
private static final int REQUEST_CODE = 99;
private Button scanButton;
private Button cameraButton;
private Button mediaButton;
private ImageView scannedImageView;
//----------- OCR PART --------
private TessBaseAPI mTess;
String datapath = "";
Bitmap image;
//-----------------------------
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
init();
//----------- OCR PART --------
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
//init image
image = BitmapFactory.decodeResource(getResources(), R.id.scannedImage);
//initialize Tesseract API
String language = "eng";
datapath = getFilesDir()+ "/tesseract/";
mTess = new TessBaseAPI();
checkFile(new File(datapath + "tessdata/"));
mTess.init(datapath, language);
//-----------------------------
}
private void init() {
scanButton = (Button) findViewById(R.id.scanButton);
scanButton.setOnClickListener(new ScanButtonClickListener());
cameraButton = (Button) findViewById(R.id.cameraButton);
cameraButton.setOnClickListener(new ScanButtonClickListener(ScanConstants.OPEN_CAMERA));
mediaButton = (Button) findViewById(R.id.mediaButton);
mediaButton.setOnClickListener(new ScanButtonClickListener(ScanConstants.OPEN_MEDIA));
scannedImageView = (ImageView) findViewById(R.id.scannedImage);
}
private class ScanButtonClickListener implements View.OnClickListener {
private int preference;
public ScanButtonClickListener(int preference) {
this.preference = preference;
}
public ScanButtonClickListener() {
}
@Override
public void onClick(View v) {
startScan(preference);
}
}
protected void startScan(int preference) {
Intent intent = new Intent(this, ScanActivity.class);
intent.putExtra(ScanConstants.OPEN_INTENT_PREFERENCE, preference);
startActivityForResult(intent, REQUEST_CODE);
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (requestCode == REQUEST_CODE && resultCode == Activity.RESULT_OK) {
Uri uri = data.getExtras().getParcelable(ScanConstants.SCANNED_RESULT);
Bitmap bitmap = null;
try {
bitmap = MediaStore.Images.Media.getBitmap(getContentResolver(), uri);
getContentResolver().delete(uri, null, null);
scannedImageView.setImageBitmap(bitmap);
}
catch (IOException e) {
e.printStackTrace();
}
}
}
private Bitmap convertByteArrayToBitmap(byte[] data) {
return BitmapFactory.decodeByteArray(data, 0, data.length);
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.menu_main, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
//noinspection SimplifiableIfStatement
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
//----------- OCR PART --------
public void processImage(View view){
String OCRresult = null;
mTess.setImage(image);
OCRresult = mTess.getUTF8Text();
TextView OCRTextView = (TextView) findViewById(R.id.OCRTextView);
OCRTextView.setText(OCRresult);
}
private void checkFile(File dir) {
if (!dir.exists()&& dir.mkdirs()){
copyFiles();
}
if(dir.exists()) {
String datafilepath = datapath+ "/tessdata/eng.traineddata";
File datafile = new File(datafilepath);
if (!datafile.exists()) {
copyFiles();
}
}
}
private void copyFiles() {
try {
String filepath = datapath + "/tessdata/eng.traineddata";
AssetManager assetManager = getAssets();
InputStream instream = assetManager.open("tessdata/eng.traineddata");
OutputStream outstream = new FileOutputStream(filepath);
byte[] buffer = new byte[1024];
int read;
while ((read = instream.read(buffer)) != -1) {
outstream.write(buffer, 0, read);
}
outstream.flush();
outstream.close();
instream.close();
File file = new File(filepath);
if (!file.exists()) {
throw new FileNotFoundException();
}
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
//-----------------------------
}
谁能帮我...
提前致谢。
PS。如果建议是循序渐进的，那会很好。因为我之前对android-studio没有太多经验。即使我努力研究它，但在某些情况下我还是不明白。
最佳答案
这可能与scanlibray项目和您的应用程序之间的解析方法有关。下面介绍了如何导入现有项目并利用其类。
试一下。
在settings.gradle下的scanlibrary文件中，将include ':app', ':scanlibrary'更改为include ':scanlibrary', ':app'。
然后，在您的app项目中，打开build.gradle，在依赖项下，添加complie project (':scanlibrary')
关于java - Android:java.lang.UnsatisfiedLinkError…找不到“lib…”，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/40944491/