我想做的只是添加最近捕获的文件名的日志行。不幸的是,由于以下指示错误,应用程序失败下面提供的堆栈代码和错误。
提前致谢,
的Anar
java.lang.RuntimeException:传递结果失败 ResultInfo {who = null,request = 100,result = -1,data = null}到活动 {az.justx.justx / az.justx.justx.MainActivity}: java.lang.NullPointerException:尝试调用虚方法 空对象上的'android.net.Uri android.content.Intent.getData()' 参考
private void interceptCameraButtonClick() {
Button cameraButton = (Button) findViewById(R.id.cam);
cameraButton.setOnClickListener(
new View.OnClickListener() {
@Override
public void onClick(View v) {
Intent imageIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
File imagesFolder = new File(Environment.getExternalStorageDirectory(), "MyImages");
imagesFolder.mkdirs(); // <----
String timeStamp = new SimpleDateFormat("yyyyMMdd_HHmmss").format(new Date());
File image = new File(imagesFolder, "AD_" + timeStamp + ".jpg");
Uri uriSavedImage = Uri.fromFile(image);
imageIntent.putExtra(MediaStore.EXTRA_OUTPUT, uriSavedImage);
startActivityForResult(imageIntent, 100);
}
}
);
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
Log.i("Test", Integer.toString(resultCode));
if (requestCode == CAPTURE_IMAGE_ACTIVITY_REQUEST_CODE) {
if (resultCode == RESULT_OK) {
// Image captured and saved to fileUri specified in the Intent
Log.i("CALLED", "Image saved to:\n" +
data.getData());
Toast.makeText(this, "Image saved to:\n" +
data.getData(), Toast.LENGTH_LONG).show();
} else if (resultCode == RESULT_CANCELED) {
// User cancelled the image capture
} else {
// Image capture failed, advise user
}
}
}
答案 0 :(得分:1)
相机不要求将[{1}}中的Uri
发送回Intent
。您已经知道onActivityResult()
是什么,正如您在Uri
中所说的那样。你只需要使用那个值。请确保将其包含在已保存的实例状态中,因为您的进程可能会在相机应用程序位于前台时终止。