Android5.0 以后已经抛弃了Camer 相关的API，改用新的API接口CamerManager.

1. Anf文件

 <!--开启闪关灯的权限-->
    <uses-permission android:name="android.permission.FLASHLIGHT" />
    <uses-permission android:name="android.permission.CAMERA"/>
    <uses-feature android:name="android.hardware.camera" />
    <uses-feature android:name="android.hardware.autofocus"/>

2. 代码文件

• 在onCreate方法中初始化

        //6.0及以上系统开启闪光灯操作
        manager = (CameraManager) getSystemService(Context.CAMERA_SERVICE);
        try {
            String [] camerList = manager.getCameraIdList();
            for (String str:camerList
                    ) {
                Log.d("List",str);
            }
        } catch (CameraAccessException e) {
            Log.e("error",e.getMessage());
        }

• 找到控件设置点击事件

 case R.id.iv_flashlight:
                iv_flashlight.startAnimation(animation);
                if (!isOpen) {
                    if (isLOLLIPOP()) {
                        try {
                            manager.setTorchMode("0", true);
                        } catch (CameraAccessException e) {
                            e.printStackTrace();
                        }
                    }else{
                    camera = Camera.open();
                    camera.startPreview();
                    parameters = camera.getParameters();
                    parameters.setFlashMode(Camera.Parameters.FLASH_MODE_TORCH);
                    camera.setParameters(parameters);
                    }
                } else {
                    if (isLOLLIPOP()) {
                        try {
                            manager.setTorchMode("0", false);
                        } catch (CameraAccessException e) {
                            e.printStackTrace();
                        }
                    }else{
                        parameters = camera.getParameters();
                        parameters.setFlashMode(Camera.Parameters.FLASH_MODE_OFF);
                        camera.setParameters(parameters);
                    }
                }

• 判断Android系统版本是否 >= LOLLIPOP(API21)

    /**
     * 判断Android系统版本是否 >= LOLLIPOP(API21)
     *
     * @return boolean
     */
    private boolean isLOLLIPOP() {
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
            return true;
        } else {
            return false;
        }
    }
    

如有疑问请戳这里 東方月初