android 开发之 - 调用系统闪光灯

<!-- 调用闪光灯权限 -->
    <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"/>

if (null == camera) {
                camera = Camera.open();
            }

            camera.startPreview();

            parameters = camera.getParameters();

            parameters.setFlashMode(Parameters.FLASH_MODE_TORCH);// 开启

            camera.setParameters(parameters);

if (camera != null) {

                parameters = camera.getParameters();

                parameters.setFlashMode(Parameters.FLASH_MODE_OFF);// 关闭

                camera.setParameters(parameters);

                camera.stopPreview();
                camera.release();
                camera = null;
            }