Android "Erlaubnis Denial: kann nicht in der Kamera"

Bin ich nach einem tutorial auf die Verwendung der Kamera in einem Android-app. Ich bin immer der Fehler "Erlaubnis Denial: kann nicht in der Kamera" beim ausführen von debug, sowohl auf dem emulator und dem physischen Gerät. Ich habe versucht eine Vielzahl von Berechtigungen in meiner manifest Datei. Es scheint, die meisten Menschen, die diese Fehler haben, hatte ein Tippfehler, fehlende Berechtigung oder die Berechtigungen nicht an der richtigen Stelle in Ihrem manifest.

Hier ist mein manifest-Datei:

<?xml version="1.0" encoding="utf-8"?> <manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.example.karudo.dbzrealpowerup" >

    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
    <uses-permission android:name="android.permission.FLASHLIGHT" />
    <uses-permission android:name="android.permission.CAMERA" />
    <uses-feature android:name="android.hardware.camera2" />

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

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
        <activity
            android:name=".DBZStartPowerUp"
            android:label="@string/title_activity_dbzstart_power_up" >
        </activity>
    </application>

</manifest>

Hier ist meine Aktivität:

package com.example.karudo.dbzrealpowerup;

import android.app.Activity;
import android.content.Context;
import android.graphics.SurfaceTexture;
import android.hardware.camera2.CameraAccessException;
import android.hardware.camera2.CameraCharacteristics;
import android.hardware.camera2.CameraDevice;
import android.hardware.camera2.CameraManager;
import android.hardware.camera2.params.StreamConfigurationMap;
import android.os.Bundle;
import android.util.Size;
import android.view.Menu;
import android.view.MenuItem;
import android.view.TextureView;
import android.widget.Toast;

import java.util.ArrayList;
import java.util.Collections;
import java.util.Comparator;
import java.util.List;

public class DBZStartPowerUp extends Activity {

    private Size mPreviewSize;
    private String mCameraId;
    private TextureView mTextureView;
    private TextureView.SurfaceTextureListener mSurfaceTextureListener =
            new TextureView.SurfaceTextureListener() {

                @Override
                public void onSurfaceTextureAvailable(SurfaceTexture surface, int width, int height) {
                    setupCamera(width, height);
                    openCamera();
                }

                @Override
                public void onSurfaceTextureSizeChanged(SurfaceTexture surface, int width, int height) {

                }

                @Override
                public boolean onSurfaceTextureDestroyed(SurfaceTexture surface) {
                    return false;
                }

                @Override
                public void onSurfaceTextureUpdated(SurfaceTexture surface) {

                }
            };

    private CameraDevice mCameraDevice;
    private CameraDevice.StateCallback mCameraDeviceStateCallback
            = new CameraDevice.StateCallback() {

        @Override
        public void onOpened(CameraDevice camera) {
            mCameraDevice = camera;
            Toast.makeText(getApplicationContext(), "Camera Opened!", Toast.LENGTH_SHORT).show();
        }

        @Override
        public void onDisconnected(CameraDevice camera) {
            camera.close();
            mCameraDevice = null;
        }

        @Override
        public void onError(CameraDevice camera, int error) {
            camera.close();
            mCameraDevice = null;
        }
    };

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_dbzstartpowerup);
        mTextureView = (TextureView) findViewById(R.id.dbzCameraPreview);
    }

    @Override
    public void onResume() {
        super.onResume();
        if(mTextureView.isAvailable()) {

        } else {
            mTextureView.setSurfaceTextureListener(mSurfaceTextureListener);
        }
    }

    @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_dbzstartpowerup, 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);
    }

    private void setupCamera(int width, int height) {
        CameraManager cameraManager = (CameraManager) getSystemService(Context.CAMERA_SERVICE);
        try {
            for(String cameraId : cameraManager.getCameraIdList()) {
                CameraCharacteristics cameraCharacteristics = cameraManager.getCameraCharacteristics(cameraId);
                if (cameraCharacteristics.get(CameraCharacteristics.LENS_FACING) ==
                        CameraCharacteristics.LENS_FACING_FRONT) {
                    continue;
                }
                StreamConfigurationMap map = cameraCharacteristics.get(CameraCharacteristics.SCALER_STREAM_CONFIGURATION_MAP);
                mPreviewSize = getPreferredPreviewSize(map.getOutputSizes(SurfaceTexture.class), width, height);
                mCameraId = cameraId;
                return;
            }
        } catch (CameraAccessException e) {
            e.printStackTrace();
        }
    }

    private Size getPreferredPreviewSize(Size[] mapSizes, int width, int height) {
        List<Size> collectorSizes = new ArrayList<>();
        for(Size option : mapSizes) {
            if(width > height) {
                if(option.getWidth() > width &&
                        option.getHeight() > height) {
                    collectorSizes.add(option);
                }
            } else {
                if(option.getWidth() > height &&
                        option.getHeight() > width) {
                    collectorSizes.add(option);
                }
            }
        }
        if(collectorSizes.size() > 0) {
            return Collections.min(collectorSizes, new Comparator<Size>() {
                @Override
                public int compare(Size lhs, Size rhs) {
                    return Long.signum(lhs.getWidth() * lhs.getHeight() - rhs.getWidth() * rhs.getHeight());
                }
            });
        }
        return mapSizes[0];
    }

    private void openCamera() {
        CameraManager cameraManager = (CameraManager) getSystemService(Context.CAMERA_SERVICE);
        try {
            cameraManager.openCamera(mCameraId, mCameraDeviceStateCallback, null);
        } catch (CameraAccessException e) {
            e.printStackTrace();
        }
    }
}

Und den Fehler in meinem logcat:

10-04 03:15:02.740     961-8780/? E/CameraService﹕ Permission Denial: can't use the camera pid=20601, uid=10059
10-04 03:15:02.741  20601-20601/com.example.karudo.dbzrealpowerup E/AndroidRuntime﹕ FATAL EXCEPTION: main
    Process: com.example.karudo.dbzrealpowerup, PID: 20601
    java.lang.SecurityException: Lacking privileges to access camera service
            at android.hardware.camera2.utils.CameraBinderDecorator.throwOnError(CameraBinderDecorator.java:108)
            at android.hardware.camera2.legacy.CameraDeviceUserShim.connectBinderShim(CameraDeviceUserShim.java:336)
            at android.hardware.camera2.CameraManager.openCameraDeviceUserAsync(CameraManager.java:324)
            at android.hardware.camera2.CameraManager.openCamera(CameraManager.java:454)
            at com.example.karudo.dbzrealpowerup.DBZStartPowerUp.openCamera(DBZStartPowerUp.java:163)
            at com.example.karudo.dbzrealpowerup.DBZStartPowerUp.access$100(DBZStartPowerUp.java:23)
            at com.example.karudo.dbzrealpowerup.DBZStartPowerUp$1.onSurfaceTextureAvailable(DBZStartPowerUp.java:34)
            at android.view.TextureView.getHardwareLayer(TextureView.java:368)
            at android.view.View.updateDisplayListIfDirty(View.java:15151)
            at android.view.View.draw(View.java:15948)
            at android.view.ViewGroup.drawChild(ViewGroup.java:3609)
            at android.view.ViewGroup.dispatchDraw(ViewGroup.java:3399)
            at android.view.View.updateDisplayListIfDirty(View.java:15169)
            at android.view.View.draw(View.java:15948)
            at android.view.ViewGroup.drawChild(ViewGroup.java:3609)
            at android.view.ViewGroup.dispatchDraw(ViewGroup.java:3399)
            at android.view.View.updateDisplayListIfDirty(View.java:15169)
            at android.view.View.draw(View.java:15948)
            at android.view.ViewGroup.drawChild(ViewGroup.java:3609)
            at android.view.ViewGroup.dispatchDraw(ViewGroup.java:3399)
            at android.view.View.updateDisplayListIfDirty(View.java:15169)
            at android.view.View.draw(View.java:15948)
            at android.view.ViewGroup.drawChild(ViewGroup.java:3609)
            at android.view.ViewGroup.dispatchDraw(ViewGroup.java:3399)
            at android.view.View.draw(View.java:16181)
            at com.android.internal.policy.PhoneWindow$DecorView.draw(PhoneWindow.java:2690)
            at android.view.View.updateDisplayListIfDirty(View.java:15174)
            at android.view.ThreadedRenderer.updateViewTreeDisplayList(ThreadedRenderer.java:281)
            at android.view.ThreadedRenderer.updateRootDisplayList(ThreadedRenderer.java:287)
            at android.view.ThreadedRenderer.draw(ThreadedRenderer.java:322)
            at android.view.ViewRootImpl.draw(ViewRootImpl.java:2615)
            at android.view.ViewRootImpl.performDraw(ViewRootImpl.java:2434)
            at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:2067)
            at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1107)
            at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:6013)
            at android.view.Choreographer$CallbackRecord.run(Choreographer.java:858)
            at android.view.Choreographer.doCallbacks(Choreographer.java:670)
            at android.view.Choreographer.doFrame(Choreographer.java:606)
            at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:844)
            at android.os.Handler.handleCallback(Handler.java:739)
            at android.os.Handler.dispatchMessage(Handler.java:95)
            at android.os.Looper.loop(Looper.java:148)
            at android.app.ActivityThread.main(ActivityThread.java:5417)
            at java.lang.reflect.Method.invoke(Native Method)
            at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726)
            at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)

Ich bin neu in der app-Entwicklung und zugegeben, ich bin nicht gut im Debuggen, aber mein manifest Berechtigungen korrekt erscheinen von dem, was ich gesehen habe, anderen Menschen die Dateien (und das tutorial, das ist nur 4 Monate alt).

Kann jemand mir bitte sagen, was ich falsch gemacht habe?

Cheers,
Lee.

UPDATE: ich fand über Debuggen, stürzt es ab, sobald es erreicht diese Methode...

private void openCamera() {
    CameraManager cameraManager = (CameraManager) getSystemService(Context.CAMERA_SERVICE);
    try {
        cameraManager.openCamera(mCameraId, mCameraDeviceStateCallback, null);
    } catch (CameraAccessException e) {
        e.printStackTrace();
    }

}

... insbesondere, sobald er ausgeführt wird der try-Anweisung.

UPDATE 2: Wenn ich kommentieren Sie die try/catch-Anweisungen, die app stürzt nicht ab, aber das erwartete Ergebnis (das ist print "Kamera Geöffnet!") nicht passieren. Irgendwelche Ideen?

UPDATE 3: ich entschuldige mich, ich erkannte, wie dumm meine oben genannten edit-war. Es ist offensichtlich, warum es nicht mehr abstürzt, aber zumindest weiß ich jetzt, ich habe zu Debuggen mein cameraManager.openCamera Parameter. Den code gibt es, wenn jeder sehen können 🙂

InformationsquelleAutor Lee Valentine | 2015-10-04