Intent.resolveActivity(getPackageManager())返回null的解决办法
一、概述
在HarmonyOS 4.0.0调用相机拍照时,Intent.resolveActivity(getPackageManager())返回了,null,但是摄像头是正常的没啥问题。
二、解决办法
多加一层判断,判断是否有摄像头且摄像头是否可用
/** * 判断是否有摄像头,摄像头是否可用 * * @return */ private boolean isCameraOpen() { boolean isCamera = false; try { CameraManager cameraManager = (CameraManager) getSystemService(Context.CAMERA_SERVICE); String[] cameraIds = cameraManager.getCameraIdList(); if (cameraIds.length > 0) { //摄像头存在 if (cameraIds[0] != null || cameraIds[1] != null) { isCamera = true; } } } catch (IllegalStateException | CameraAccessException e) { e.printStackTrace(); } return isCamera; }
判断示例:
if (cameraIntent.resolveActivity(getPackageManager()) != null || isCameraOpen()) { //拍照的代码 }