我遵循了一个使用 android 拍照的简单教程 (http://developer.android.com/guide/topics/media/camera.html)。
private static final int CAPTURE_IMAGE_ACTIVITY_REQUEST_CODE = 100;
protected void onTakePicture()
{
// create Intent to take a picture and return control to the calling application
Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
// create a file to save the image
File file = Environment.getExternalStorageDirectory();
String path = file.getAbsolutePath() + "/Android/data/com.myapplication/files";
File dir = new File(path);
if (!dir.isDirectory())
dir.mkdirs();
File outFile = new File(path + File.separator + "img.jpg");
Uri fileUri = Uri.fromFile(outFile);
intent.putExtra(MediaStore.EXTRA_OUTPUT, fileUri);
// set the image file name
// start the image capture Intent
startActivityForResult(intent, CAPTURE_IMAGE_ACTIVITY_REQUEST_CODE);
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data)
{
if (requestCode==CAPTURE_IMAGE_ACTIVITY_REQUEST_CODE)
{
// Image captured and saved to fileUri specified in the Intent
Uri fn = data.getData();
Toast.makeText(this, "Image saved to:\n" + fn.toString(), Toast.LENGTH_LONG).show();
}
}
我在 Activity 中调用它。现在的问题是,当camera activity出现时,我可以拍多张照片,但我只想拍一张,然后返回调用activity。在我离开相机 Activity (通过按“后退”按钮)之前,不会调用 onActivityResult 。然后 data.getData() 崩溃。
有什么想法吗?
谢谢 格哈德
最佳答案
嗯...这对我来说很适合捕捉图像:
Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
activity.startActivityForResult(intent, AbstractActivity.CAPTURE_IMAGE_ACTIVITY_REQUEST_CODE);
当用户拍照时,它会询问用户是否要接受这张图片,然后它会返回到我的 Activity ,我...
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (requestCode == CAPTURE_IMAGE_ACTIVITY_REQUEST_CODE) {
if (resultCode == RESULT_OK) {
handleAvatarUpload(data); // which uses Uri selectedImage = data.getData();
}
}
}
我还没有收到任何关于此代码的崩溃报告,而且它已经发布了几个月。我们的用户群与我们类别中的其他应用一致,Android 2.3.3 用户占 71%,2.2 占 16.35%,2.1 占 5.7%
关于android - 拍一张照片,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/10619810/