情况是：我正在尝试从片段更新活动中的图像。
例外:java.lang.IllegalArgumentException: view must not be null
onCreateView：
activityIcon = (ImageView) getActivity().findViewById(R.id.my_figure_view);
按钮监听器：
imageLoader.displayImage("file://" + uri, activityIcon, ImageHelper.Personoptions);
我在Stackoverflow上发现了许多其他类似的问题。不幸的是，我没有得到明确的解决方案。
11-17 12:58:20.710 1824-1824/com.itscn.zhbt W/System.err: at com.nostra13.universalimageloader.core.imageaware.ViewAware.<init>(ViewAware.java:70)
11-17 12:58:20.710 1824-1824/com.itscn.zhbt W/System.err: at com.nostra13.universalimageloader.core.imageaware.ViewAware.<init>(ViewAware.java:50)
11-17 12:58:20.710 1824-2032/com.itscn.zhbt D/ImageLoader: Start display image task [file:///storage/emulated/0/itscn/header/header.png_140x140]
11-17 12:58:20.710 1824-1824/com.itscn.zhbt W/System.err: at com.nostra13.universalimageloader.core.imageaware.ImageViewAware.<init>(ImageViewAware.java:44)
11-17 12:58:20.710 1824-1824/com.itscn.zhbt W/System.err: at com.nostra13.universalimageloader.core.ImageLoader.displayImage(ImageLoader.java:303)
11-17 12:58:20.710 1824-1824/com.itscn.zhbt W/System.err: at com.itscn.zhbt.fragment.slider.PersonalInfo.loadTakeIcon(PersonalInfo.java:225)
11-17 12:58:20.710 1824-1824/com.itscn.zhbt W/System.err: at com.itscn.zhbt.fragment.slider.PersonalInfo.onActivityResult(PersonalInfo.java:176)
11-17 12:58:20.710 1824-2032/com.itscn.zhbt D/ImageLoader: Load image from network [file:///storage/emulated/0/itscn/header/header.png_140x140]
11-17 12:58:20.710 1824-1824/com.itscn.zhbt W/System.err: at android.support.v4.app.FragmentActivity.onActivityResult(FragmentActivity.java:156)
11-17 12:58:20.710 1824-1824/com.itscn.zhbt W/System.err: at android.app.Activity.dispatchActivityResult(Activity.java)
11-17 12:58:20.710 1824-1824/com.itscn.zhbt W/System.err: at android.app.ActivityThread.deliverResults(ActivityThread.java)
11-17 12:58:20.710 1824-1824/com.itscn.zhbt W/System.err: at android.app.ActivityThread.performResumeActivity(ActivityThread.java)
11-17 12:58:20.710 1824-1824/com.itscn.zhbt W/System.err: at android.app.ActivityThread.handleResumeActivity(ActivityThread.java)
11-17 12:58:20.710 1824-1824/com.itscn.zhbt W/System.err: at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java)
11-17 12:58:20.710 1824-1824/com.itscn.zhbt W/System.err: at android.app.ActivityThread.access$700(ActivityThread.java)
11-17 12:58:20.710 1824-1824/com.itscn.zhbt W/System.err: at android.app.ActivityThread$H.handleMessage(ActivityThread.java)
11-17 12:58:20.715 1824-1824/com.itscn.zhbt W/System.err: at android.os.Handler.dispatchMessage(Handler.java)
11-17 12:58:20.715 1824-1824/com.itscn.zhbt W/System.err: at android.os.Looper.loop(Looper.java)
11-17 12:58:20.715 1824-1824/com.itscn.zhbt W/System.err: at android.app.ActivityThread.main(ActivityThread.java)
11-17 12:58:20.715 1824-1824/com.itscn.zhbt W/System.err: at java.lang.reflect.Method.invokeNative(Native Method)
11-17 12:58:20.715 1824-1824/com.itscn.zhbt W/System.err: at java.lang.reflect.Method.invoke(Method.java)
11-17 12:58:20.715 1824-1824/com.itscn.zhbt W/System.err: at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java)
11-17 12:58:20.715 1824-1824/com.itscn.zhbt W/System.err: at com.android.internal.os.ZygoteInit.main(ZygoteInit.java)
11-17 12:58:20.715 1824-1824/com.itscn.zhbt W/System.err: at dalvik.system.NativeStart.main(Native Method)
Java代码
public class PersonalInfo extends Fragment {
private Bitmap myBitmap;
private byte[] mContent;
private MainActivity mainActivity;
private Uri imageUri;
private File imageFile;
public static final int TAKE_PHOTO = 1;
public static final int CHOOSE_PHOTO = 2;
public static final int REQUE_CODE_CROP = 3;
private ImageView person_photo;
private ImageView activityIcon;
private Handler myHandler = new Handler();
private Runnable mLoadingRunnable = new Runnable() {
@Override
public void run() {
loadIcon();
}
};
public PersonalInfo() {
}
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflate the layout for this fragment
View rootView = inflater.inflate(R.layout.fragment_personal__info, container, false);
mainActivity = (MainActivity) getActivity();
person_photo = (ImageView) rootView.findViewById(R.id.person_photo);
activityIcon = (ImageView) getActivity().findViewById(R.id.my_figure_view);
myHandler.post(mLoadingRunnable);
setListener(rootView);
return rootView;
}
private void setListener(View rootView) {
ImageView backImage = (ImageView) rootView.findViewById(R.id.back);
backImage.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
mainActivity.backToMain();
}
});
person_photo.setOnClickListener(new View.OnClickListener() {
final CharSequence[] items = {"Alumb", "Photo"};
@Override
public void onClick(View v) {
AlertDialog dlg = new AlertDialog.Builder(getContext()).setTitle("choose photo").setItems(items,
new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
if (which == 1) {
Intent getImageByCamera = new Intent("android.media.action.IMAGE_CAPTURE");
getImageByCamera = setIntent(getImageByCamera);
startActivityForResult(getImageByCamera, TAKE_PHOTO);
} else {
Intent getImage = new Intent(Intent.ACTION_GET_CONTENT);
getImage.addCategory(Intent.CATEGORY_OPENABLE);
getImage.setType("image/png");
getImage.putExtra(android.provider.MediaStore.EXTRA_OUTPUT, imageUri);
getImage = setIntent(getImage);
getImage.putExtra("crop", "true");
getImage.putExtra("aspectX", 1);
getImage.putExtra("aspectY", 1);
getImage.putExtra("outputX", 600);
getImage.putExtra("outputY", 600);
getImage.putExtra("scale", true);
getImage.putExtra("return-data", false);
startActivityForResult(getImage, CHOOSE_PHOTO);
}
}
protected Intent setIntent(Intent intent) {
//folder stuff
File imagesFolder = new File(Environment.getExternalStorageDirectory(), "/itscn/header");
imagesFolder.mkdirs();
imageFile = new File(imagesFolder, "header.png");
Uri uriSavedImage = Uri.fromFile(imageFile);
intent.putExtra(MediaStore.EXTRA_OUTPUT, uriSavedImage);
return intent;
}
}).create();
dlg.show();
}
});
}
private void loadIcon() {
String path = FileUtils.getHeaderPictureDirPath() + "/header.png";
Uri uri = Uri.fromFile(new File(path));
ImageLoader imageLoader = ImageLoader.getInstance();
imageLoader.clearDiskCache();
imageLoader.clearMemoryCache();
imageLoader.displayImage(uri.toString(), person_photo, ImageHelper.Personoptions);
}
@Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
switch (requestCode) {
case CHOOSE_PHOTO:
try {
loadTakeIcon(FileUtils.getHeaderPictureDirPath() + "/header.png");
} catch (Exception e) {
e.printStackTrace();
}
break;
case TAKE_PHOTO:
try {
loadTakeIcon(FileUtils.getHeaderPictureDirPath() + "/header.png");
} catch (Exception e) {
e.printStackTrace();
}
break;
case REQUE_CODE_CROP:
try {
loadTakeIcon(FileUtils.getHeaderPictureDirPath() + "/header.png");
} catch (Exception e) {
e.printStackTrace();
}
break;
default:
break;
}
}
private void loadTakeIcon(String uri) {
ImageLoader imageLoader = ImageLoader.getInstance();
imageLoader.clearDiskCache();
imageLoader.clearMemoryCache();
imageLoader.displayImage("file://" + uri, person_photo, ImageHelper.Personoptions);
if (activityIcon != null) {
imageLoader.displayImage("file://" + uri, activityIcon, ImageHelper.Personoptions);
}
}
@Override
public void onDestroyView() {
super.onDestroyView();
Log.d("PersonalInfo", "onDestroyView");
}
@Override
public void onDestroy() {
super.onDestroy();
Log.d("PersonalInfo", "onDestroy");
}
}
答案 0 :(得分：0)
试试这个
activityIcon = <your navigationview>.findViewById(R.id.my_figure_view);