尝试关闭相机 LED 时，应用程序崩溃

Question

我有一个代码

 @TargetApi(23)
 private void setTorchMode( CameraManager cameraManager, String id, boolean switchOn) throws CameraAccessException {


      try {
            final Method setTorchMode = cameraManager.getClass().getMethod("setTorchMode", String.class, boolean.class);
            cameraManager.setTorchMode(cameraManager.getCameraIdList()[0],switchOn);
            callbackContext.success();
      } catch (IllegalArgumentException m){

      } catch (Throwable t) {
            callbackContext.error(t.getMessage());
      }

当我尝试关闭相机 LED 灯时，我崩溃了

FATAL EXCEPTION: main
Process: uk.co.sparkenergy.androidapp2, PID: 31200    java.lang.IllegalArgumentException: Receiver not registered: android.hardware.camera2.CameraManager@6e1ab65
                                                                               at android.app.LoadedApk.forgetReceiverDispatcher(LoadedApk.java:793)
                                                                               at android.app.ContextImpl.unregisterReceiver(ContextImpl.java:1200)
                                                                               at android.hardware.camera2.CameraManager.run(CameraManager.java:1266)
                                                                               at android.os.Handler.handleCallback(Handler.java:815)
                                                                               at android.os.Handler.dispatchMessage(Handler.java:104)
                                                                               at android.os.Looper.loop(Looper.java:207)
                                                                               at android.app.ActivityThread.main(ActivityThread.java:5763)
                                                                               at java.lang.reflect.Method.invoke(Native Method)
                                                                               at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:789)
                                                                               at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:679)

只有一台索尼e5633，求助)

Answer 1

public void turnOnFlashLight() {

    try {
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
            mCameraManager.setTorchMode(mCameraId, true);

            mTorchOnOffButton.setImageResource(R.drawable.on);
        }
    } catch (Exception e) {
        e.printStackTrace();
    }
}


public void turnOffFlashLight() {

    try {
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
            mCameraManager.setTorchMode(mCameraId, false);

            mTorchOnOffButton.setImageResource(R.drawable.off);

        }

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

Answer 2

在某些设备上，如果手电筒被禁用并且您尝试再次禁用它，则应用程序会崩溃。所以解决办法只有切换手电筒的状态。

尝试关闭相机 LED 时，应用程序崩溃

When trying turn off camera led, app crash

camera

android

led