Question

我有一个使用谷歌手机视觉（OCR），相机和手电筒的应用程序，最近我几乎每天都在Android 6.0设备上收到崩溃报告。

这是报告：

java.lang.IllegalStateException: 

  at android.support.v7.app.AppCompatViewInflater$DeclaredOnClickListener.onClick (AppCompatViewInflater.java:293)

  at android.view.View.performClick (View.java:5293)

  at android.view.View$PerformClick.run (View.java:21660)

  at android.os.Handler.handleCallback (Handler.java:815)

  at android.os.Handler.dispatchMessage (Handler.java:104)

  at android.os.Looper.loop (Looper.java:227)

  at android.app.ActivityThread.main (ActivityThread.java:6100)

  at java.lang.reflect.Method.invoke (Native Method)

  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run (ZygoteInit.java:859)

  at com.android.internal.os.ZygoteInit.main (ZygoteInit.java:749)
Caused by: java.lang.reflect.InvocationTargetException: 

  at java.lang.reflect.Method.invoke (Native Method)

  at android.support.v7.app.AppCompatViewInflater$DeclaredOnClickListener.onClick (AppCompatViewInflater.java:288)
Caused by: java.lang.NullPointerException: 

  at java.lang.reflect.Field.get (Native Method)

  at myPacName.instantscanandrecharge.CamActivity.changeFlashStatus (CamActivity.java:412)

我不知道如何处理本报告中的原生方法

但是从我自己的代码中导致此错误的方法是：

public void changeFlashStatus(View v) {


    Field[] declaredFields = CameraSource.class.getDeclaredFields();

    for (Field field : declaredFields) {
        if (field.getType() == Camera.class) {
            field.setAccessible(true);
            try {
                camera = (Camera) field.get(camSource);
                if (camera != null) {
                    params = camera.getParameters();

                    if(!isFlash){
                        params.setFlashMode(Camera.Parameters.FLASH_MODE_TORCH);
                        flash_btn.setImageResource(R.drawable.ic_action_flash_on);

                        isFlash = true;
                    } else {
                        params.setFlashMode(Camera.Parameters.FLASH_MODE_OFF);
                        flash_btn.setImageResource(R.drawable.ic_action_flash_off);

                        isFlash = false;

                    }
                    camera.setParameters(params);

                }

            } catch (IllegalAccessException e) {
                e.printStackTrace();
            }

            break;
        }
    }

}

为什么它不适用于Android 6.0？

Android崩溃报告：Android 6.0上的java.lang.IllegalStateException

0 个答案: