registerForActivityResult拍照
时间: 2024-05-04 20:04:12 浏览: 22
registerForActivityResult是一个用于处理ActivityResult的API。在这个例子中,registerForActivityResult被用于实现拍照功能。通过调用registerForActivityResult(ActivityResultContracts.TakePicturePreview())来注册一个拍照的ActivityResult合约。当用户点击拍照按钮时,takePicturePreview.launch(null)被调用,触发拍照操作。拍摄完成后,返回的照片预览图像将通过回调函数photoPreview进行处理并显示在ImageView上。这样就实现了拍照功能。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
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