打开摄像头内容时Android应用程序崩溃

我正在写一个应用程序，其中一个按钮被按下，它必须打开相机。但我的应用程序在运行安卓6.01的Nexus5上不断崩溃
这是我的onCLick听众

public void capturePhoto(View view) {
    Log.d(TAG, "Capture button pressed.");
    Intent cameraApplicationIntent = new Intent();
    cameraApplicationIntent.setAction(android.provider.MediaStore.ACTION_IMAGE_CAPTURE);

    File photoFile = null;
    try {
        photoFile = createImageFile();
    } catch (IOException e) {
        e.printStackTrace();
    }
    cameraApplicationIntent.putExtra(MediaStore.EXTRA_OUTPUT, Uri.fromFile(photoFile));
    startActivityForResult(cameraApplicationIntent, CAMERA_INTENT_REQUEST);
}

我在舱单上有：

<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
<uses-permission android:name="android.permission.CAMERA" />

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在Android 6.0及更高版本中，仅仅在清单中拥有权限是不够的。您需要在运行时请求权限：）

文件：

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Stacktrace请。请注意，您需要Marshmallow上用户的运行时权限。请在android 6.0上使用此库

01-24 01:42:50.859  26744-26744/kiam.cameraintentpractice D/ImageAcquisition﹕ Capture button pressed.
01-24 01:42:50.873  26744-26744/kiam.cameraintentpractice W/System.err﹕ java.io.IOException: open failed: EACCES (Permission denied)
01-24 01:42:50.874  26744-26744/kiam.cameraintentpractice W/System.err﹕ at java.io.File.createNewFile(File.java:939)
01-24 01:42:50.874  26744-26744/kiam.cameraintentpractice W/System.err﹕ at java.io.File.createTempFile(File.java:1004)
01-24 01:42:50.874  26744-26744/kiam.cameraintentpractice W/System.err﹕ at kiam.cameraintentpractice.ImageAcquisition.createImageFile(ImageAcquisition.java:197)
01-24 01:42:50.874  26744-26744/kiam.cameraintentpractice W/System.err﹕ at kiam.cameraintentpractice.ImageAcquisition.capturePhoto(ImageAcquisition.java:157)
01-24 01:42:50.874  26744-26744/kiam.cameraintentpractice W/System.err﹕ at java.lang.reflect.Method.invoke(Native Method)
01-24 01:42:50.874  26744-26744/kiam.cameraintentpractice W/System.err﹕ at android.view.View$DeclaredOnClickListener.onClick(View.java:4453)
01-24 01:42:50.874  26744-26744/kiam.cameraintentpractice W/System.err﹕ at android.view.View.performClick(View.java:5204)
01-24 01:42:50.874  26744-26744/kiam.cameraintentpractice W/System.err﹕ at android.view.View$PerformClick.run(View.java:21153)
01-24 01:42:50.874  26744-26744/kiam.cameraintentpractice W/System.err﹕ at android.os.Handler.handleCallback(Handler.java:739)
01-24 01:42:50.874  26744-26744/kiam.cameraintentpractice W/System.err﹕ at android.os.Handler.dispatchMessage(Handler.java:95)
01-24 01:42:50.874  26744-26744/kiam.cameraintentpractice W/System.err﹕ at android.os.Looper.loop(Looper.java:148)
01-24 01:42:50.874  26744-26744/kiam.cameraintentpractice W/System.err﹕ at android.app.ActivityThread.main(ActivityThread.java:5417)
01-24 01:42:50.874  26744-26744/kiam.cameraintentpractice W/System.err﹕ at java.lang.reflect.Method.invoke(Native Method)
01-24 01:42:50.874  26744-26744/kiam.cameraintentpractice W/System.err﹕ at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726)
01-24 01:42:50.874  26744-26744/kiam.cameraintentpractice W/System.err﹕ at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)
01-24 01:42:50.874  26744-26744/kiam.cameraintentpractice W/System.err﹕ Caused by: android.system.ErrnoException: open failed: EACCES (Permission denied)
01-24 01:42:50.874  26744-26744/kiam.cameraintentpractice W/System.err﹕ at libcore.io.Posix.open(Native Method)
01-24 01:42:50.874  26744-26744/kiam.cameraintentpractice W/System.err﹕ at libcore.io.BlockGuardOs.open(BlockGuardOs.java:186)
01-24 01:42:50.874  26744-26744/kiam.cameraintentpractice W/System.err﹕ at java.io.File.createNewFile(File.java:932)
01-24 01:42:50.874  26744-26744/kiam.cameraintentpractice W/System.err﹕ ... 14 more
01-24 01:42:50.874  26744-26744/kiam.cameraintentpractice D/AndroidRuntime﹕ Shutting down VM
01-24 01:42:50.876  26744-26744/kiam.cameraintentpractice E/AndroidRuntime﹕ FATAL EXCEPTION: main
    Process: kiam.cameraintentpractice, PID: 26744
    java.lang.IllegalStateException: Could not execute method for android:onClick
            at android.view.View$DeclaredOnClickListener.onClick(View.java:4458)
            at android.view.View.performClick(View.java:5204)
            at android.view.View$PerformClick.run(View.java:21153)
            at android.os.Handler.handleCallback(Handler.java:739)
            at android.os.Handler.dispatchMessage(Handler.java:95)
            at android.os.Looper.loop(Looper.java:148)
            at android.app.ActivityThread.main(ActivityThread.java:5417)
            at java.lang.reflect.Method.invoke(Native Method)
            at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726)
            at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)
     Caused by: java.lang.reflect.InvocationTargetException
            at java.lang.reflect.Method.invoke(Native Method)
            at android.view.View$DeclaredOnClickListener.onClick(View.java:4453)
            at android.view.View.performClick(View.java:5204)
            at android.view.View$PerformClick.run(View.java:21153)
            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$MethodAndArgsCaller.run(ZygoteInit.java:726)
            at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)
     Caused by: java.lang.NullPointerException: file
            at android.net.Uri.fromFile(Uri.java:452)
            at kiam.cameraintentpractice.ImageAcquisition.capturePhoto(ImageAcquisition.java:161)
            at java.lang.reflect.Method.invoke(Native Method)
            at android.view.View$DeclaredOnClickListener.onClick(View.java:4453)
            at android.view.View.performClick(View.java:5204)
            at android.view.View$PerformClick.run(View.java:21153)
            at android.os.Handler.handleCallback(Handler.java:739)
            at android.os.Handler.dispatchMessage(Handler.java:95)
            at android.os.Looper.loop(Looper.java:148)
            at android.app.ActivityThread.main(ActivityThread.java:5417)
            at java.lang.reflect.Method.invoke(Native Method)
            at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726)
            at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)