java - OpenCV 和 Android Studio : "unfortunately app has stopped"

Question

我尝试使用 OpenCV 访问 Android 相机。我成功创建了一个项目，并且运行没有任何问题。我尝试使用互联网上的代码并在我的项目中检查它。但是，应用程序停止了。这似乎是一个 RuntimeException 问题，但我不知道如何解决。这是我的代码，我从这个网站复制的http://people.oregonstate.edu/~robinsti/CS_496/Tutorial/ :

mainActivity.java

public class MainActivity extends AppCompatActivity implements View.OnTouchListener, CameraBridgeViewBase.CvCameraViewListener2{

private CameraBridgeViewBase mOpenCvCameraView;
private Mat mRgba;

@Override
public void onCreate(Bundle savedInstanceState, PersistableBundle persistentState) {
    super.onCreate(savedInstanceState, persistentState);
    setContentView(R.layout.activity_main);

    getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
    mOpenCvCameraView = (CameraBridgeViewBase) findViewById(R.id.Surface);
    mOpenCvCameraView.setVisibility(SurfaceView.VISIBLE);
    //mOpenCvCameraView.setMaxFrameSize(176, 152);
    mOpenCvCameraView.setCvCameraViewListener(this);
}

private BaseLoaderCallback mLoaderCallBack = new BaseLoaderCallback(this) {
    @Override
    public void onManagerConnected(int status) {
        super.onManagerConnected(status);
        switch (status) {
            case LoaderCallbackInterface.SUCCESS: {
                mOpenCvCameraView.enableView();
                mOpenCvCameraView.setOnTouchListener(MainActivity.this);
            } break;
            default: {
                super.onManagerConnected(status);
            } break;
        }
    }
};

@Override
public void onPause() {
    super.onPause();
    if(mOpenCvCameraView != null) {
        mOpenCvCameraView.disableView();
    }
}

@Override
public void onResume() {
    super.onResume();
    if(mOpenCvCameraView != null) {
        mOpenCvCameraView.disableView();
    }

}


@Override
public void onDestroy() {
    super.onDestroy();

    if(!OpenCVLoader.initDebug()) {
        OpenCVLoader.initAsync(OpenCVLoader.OPENCV_VERSION_3_1_0,this, mLoaderCallBack);
    }
    else {
        mLoaderCallBack.onManagerConnected(LoaderCallbackInterface.SUCCESS);
    }
}

@Override
public void onCameraViewStarted(int width, int height) {

}

@Override
public void onCameraViewStopped() {

}

@Override
public Mat onCameraFrame(CameraBridgeViewBase.CvCameraViewFrame inputFrame) {
    mRgba = inputFrame.rgba();
    return mRgba;
}

@Override
public boolean onTouch(View view, MotionEvent motionEvent) {
    return false;
}

}

activity_main.xml:

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="horizontal"
xmlns:opencv="http://schemas.android.com/apk/res-auto"
tools:context="com.tech.te.smartrotate.MainActivity">

<org.opencv.android.JavaCameraView
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:id="@+id/Surface" />

</RelativeLayout>

AndroidManifest.xml:

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="                 ">
<uses-permission android:name="android.permission.CAMERA"/>
<uses-feature android:name="android.hardware.camera.autofocus"/>
<uses-feature android:name="android.hardware.camera.front"/>
<uses-feature android:name="android.hardware.camera.front.autofocus"/>

<application
    android:allowBackup="true"
    android:icon="@mipmap/ic_launcher"
    android:label="@string/app_name"
    android:supportsRtl="true"
    android:theme="@android:style/Theme.NoTitleBar.Fullscreen">        <!--android:theme="@style/AppTheme">-->
    <activity android:name=".MainActivity">
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />

            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
    </activity>
</application>

日志猫:

07-29 15:54:44.066 31188-31188/com.tech.te.app W/art: Failed to find OatDexFile for DexFile /data/data/com.tech.te.app/files/instant-run/dex/slice-slice_2-classes.dex ( canonical path /data/data/com.tech.te.app/files/instant-run/dex/slice-slice_2-classes.dex) with checksum 0x7f90e189 in OatFile /data/data/com.tech.te.app/cache/slice-slice_2-classes.dex07-29 15:54:45.836 31188-31195/com.tech.te.app W/art: Suspending all threads took: 19.602ms07-29 15:54:45.946 31188-31188/com.tech.te.app D/DisplayManager: DisplayManager()07-29 15:54:46.376 31188-31188/com.tech.te.app W/art: Before Android 4.1, method android.graphics.PorterDuffColorFilter android.support.graphics.drawable.VectorDrawableCompat.updateTintFilter(android.graphics.PorterDuffColorFilter, android.content.res.ColorStateList, android.graphics.PorterDuff$Mode) would have incorrectly overridden the package-private method in android.graphics.drawable.Drawable07-29 15:54:46.596 31188-31188/com.tech.te.app E/VdcInflateDelegate: Exception while inflating                                                                              java.lang.RuntimeException: Failed to resolve attribute at index 1                                                                                 at android.content.res.TypedArray.twGetColorStateList(TypedArray.java:437)                                                                                 at android.content.res.TypedArray.getColorStateList(TypedArray.java:419)                                                                                 at android.support.graphics.drawable.VectorDrawableCompat.updateStateFromTypedArray(VectorDrawableCompat.java:518)                                                                                 at android.support.graphics.drawable.VectorDrawableCompat.inflate(VectorDrawableCompat.java:472)                                                                                 at android.support.graphics.drawable.VectorDrawableCompat.createFromXmlInner(VectorDrawableCompat.java:436)                                                                                 at android.support.v7.widget.AppCompatDrawableManager$VdcInflateDelegate.createFromXmlInner(AppCompatDrawableManager.java:708)                                                                                 at android.support.v7.widget.AppCompatDrawableManager.loadDrawableFromDelegates(AppCompatDrawableManager.java:348)                                                                                 at android.support.v7.widget.AppCompatDrawableManager.getDrawable(AppCompatDrawableManager.java:188)                                                                                 at android.support.v7.widget.AppCompatDrawableManager.getDrawable(AppCompatDrawableManager.java:181)                                                                                 at android.support.v7.widget.AppCompatDrawableManager.checkVectorDrawableSetup(AppCompatDrawableManager.java:689)                                                                                 at android.support.v7.widget.AppCompatDrawableManager.getDrawable(AppCompatDrawableManager.java:186)                                                                                 at android.support.v7.widget.TintTypedArray.getDrawableIfKnown(TintTypedArray.java:77)                                                                                 at android.support.v7.app.AppCompatDelegateImplBase.(AppCompatDelegateImplBase.java:83)                                                                                 at android.support.v7.app.AppCompatDelegateImplV7.(AppCompatDelegateImplV7.java:146)                                                                                 at android.support.v7.app.AppCompatDelegateImplV11.(AppCompatDelegateImplV11.java:28)                                                                                 at android.support.v7.app.AppCompatDelegateImplV14.(AppCompatDelegateImplV14.java:41)                                                                                 at android.support.v7.app.AppCompatDelegate.create(AppCompatDelegate.java:193)                                                                                 at android.support.v7.app.AppCompatDelegate.create(AppCompatDelegate.java:173)                                                                                 at android.support.v7.app.AppCompatActivity.getDelegate(AppCompatActivity.java:511)                                                                                 at android.support.v7.app.AppCompatActivity.onCreate(AppCompatActivity.java:71)                                                                                 at android.app.Activity.performCreate(Activity.java:6112)                                                                                 at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1117)                                                                                 at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2609)                                                                                 at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2721)                                                                                 at android.app.ActivityThread.access$900(ActivityThread.java:168)                                                                                 at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1393)                                                                                 at android.os.Handler.dispatchMessage(Handler.java:102)                                                                                 at android.os.Looper.loop(Looper.java:135)                                                                                 at android.app.ActivityThread.main(ActivityThread.java:5753)                                                                                 at java.lang.reflect.Method.invoke(Native Method)                                                                                 at java.lang.reflect.Method.invoke(Method.java:372)                                                                                 at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1405)                                                                                 at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1200)07-29 15:54:46.596 31188-31202/com.tech.te.app I/art: Background sticky concurrent mark sweep GC freed 6652(1091KB) AllocSpace objects, 1(20KB) LOS objects, 14% free, 5MB/6MB, paused 36.125ms total 277.107ms07-29 15:54:46.616 31188-31202/com.tech.te.app I/art: Background sticky concurrent mark sweep GC freed 274(43KB) AllocSpace objects, 0(0B) LOS objects, 14% free, 5MB/6MB, paused 7.366ms total 16.707ms07-29 15:54:46.706 31188-31188/com.tech.te.app D/AndroidRuntime: Shutting down VM07-29 15:54:46.716 31188-31188/com.tech.te.app E/AndroidRuntime: FATAL EXCEPTION: main                                                                         Process: com.tech.te.app, PID: 31188                                                                         java.lang.RuntimeException: Unable to start activity ComponentInfo{com.tech.te.app/com.tech.te.app.MainActivity}: java.lang.IllegalStateException: You need to use a Theme.AppCompat theme (or descendant) with this activity.                                                                             at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2656)                                                                             at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2721)                                                                             at android.app.ActivityThread.access$900(ActivityThread.java:168)                                                                             at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1393)                                                                             at android.os.Handler.dispatchMessage(Handler.java:102)                                                                             at android.os.Looper.loop(Looper.java:135)                                                                             at android.app.ActivityThread.main(ActivityThread.java:5753)                                                                             at java.lang.reflect.Method.invoke(Native Method)                                                                             at java.lang.reflect.Method.invoke(Method.java:372)                                                                             at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1405)                                                                             at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1200)                                                                          Caused by: java.lang.IllegalStateException: You need to use a Theme.AppCompat theme (or descendant) with this activity.                                                                             at android.support.v7.app.AppCompatDelegateImplV7.createSubDecor(AppCompatDelegateImplV7.java:343)                                                                             at android.support.v7.app.AppCompatDelegateImplV7.ensureSubDecor(AppCompatDelegateImplV7.java:312)                                                                             at android.support.v7.app.AppCompatDelegateImplV7.onPostCreate(AppCompatDelegateImplV7.java:167)                                                                             at android.support.v7.app.AppCompatActivity.onPostCreate(AppCompatActivity.java:98)                                                                             at android.app.Instrumentation.callActivityOnPostCreate(Instrumentation.java:1198)                                                                             at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2638)                                                                             at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2721)                                                                              at android.app.ActivityThread.access$900(ActivityThread.java:168)                                                                              at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1393)                                                                              at android.os.Handler.dispatchMessage(Handler.java:102)                                                                              at android.os.Looper.loop(Looper.java:135)                                                                              at android.app.ActivityThread.main(ActivityThread.java:5753)                                                                              at java.lang.reflect.Method.invoke(Native Method)                                                                              at java.lang.reflect.Method.invoke(Method.java:372)                                                                              at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1405)                                                                              at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1200) 07-29 15:54:50.366 31188-31188/com.tech.te.app I/Process: Sending signal. PID: 31188 SIG: 9

非常感谢。

Answer 1

您正在 OnDestroy 上加载 OpenCV，您不应该这样做。

@Override
public void onDestroy() {
    super.onDestroy();

    if(!OpenCVLoader.initDebug()) {
        OpenCVLoader.initAsync(OpenCVLoader.OPENCV_VERSION_3_1_0,this, mLoaderCallBack);
    }
    else {
        mLoaderCallBack.onManagerConnected(LoaderCallbackInterface.SUCCESS);
    }
}

此外，您不应同时使用 initDebug 和 initAsync。

initDebug 用于静态初始化，您的 apk 中需要有这些库。

initAsync 与安装的 OpenCV Manager 一起使用。

对于静态初始化，有一个很好的答案Here

onResume、onPause 和 onDestroy 应该像这样:

@Override
protected void onResume()
{
    super.onResume();
    _javaCameraView.enableView();
}

@Override
protected void onPause() {
    if (_javaCameraView != null) {
        _javaCameraView.disableView();
    }
    super.onPause();
}

@Override
public void onDestroy() {
    if (_javaCameraView != null) {
        _javaCameraView.disableView();
    }
    super.onDestroy();
}

有关静态初始化的一些信息:

public class MainActivity extends Activity implements CameraBridgeViewBase.CvCameraViewListener2 {

private static boolean openCVStarted = false;
JavaCameraView _javaCameraView;

    static{
        System.loadLibrary("opencv_java3");


        if(!OpenCVLoader.initDebug()) {
            Log.d("ERROR", "Unable to load OpenCV");
            openCVStarted = false;
        } else {
            Log.d("SUCCESS", "OpenCV loaded");
            openCVStarted = true;
        }
    }

    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        _javaCameraView = (JavaCameraView)findViewById(R.id.cameraView);
        //_javaCameraView.setMaxFrameSize(size.width, size.height);
        _javaCameraView.setVisibility(SurfaceView.VISIBLE);
        _javaCameraView.setCvCameraViewListener(this);
        _javaCameraView.enableView();
        _javaCameraView.enableFpsMeter();
    }

    @Override
    public Mat onCameraFrame(CameraBridgeViewBase.CvCameraViewFrame inputFrame)
    {
        _imgBgrTemp = inputFrame.rgba();
        // Work with the frame here
        return _imgBgrTemp;
    }