Java Code Examples for android.widget.BaseAdapter#notifyDataSetChanged()

/**
 * Process data-changed notifications for the specified view in the specified
 * set of {@link RemoteViews} views.
 */
void viewDataChanged(int viewId) {
    View v = findViewById(viewId);
    if ((v != null) && (v instanceof AdapterView<?>)) {
        AdapterView<?> adapterView = (AdapterView<?>) v;
        Adapter adapter = adapterView.getAdapter();
        if (adapter instanceof BaseAdapter) {
            BaseAdapter baseAdapter = (BaseAdapter) adapter;
            baseAdapter.notifyDataSetChanged();
        }  else if (adapter == null && adapterView instanceof RemoteAdapterConnectionCallback) {
            // If the adapter is null, it may mean that the RemoteViewsAapter has not yet
            // connected to its associated service, and hence the adapter hasn't been set.
            // In this case, we need to defer the notify call until it has been set.
            ((RemoteAdapterConnectionCallback) adapterView).deferNotifyDataSetChanged();
        }
    }
}
 

public void updateContactsList() {
	if (null == mIndexValueLv) {
		return;
	}

	BaseAdapter contactsAdapter = (BaseAdapter) mIndexValueLv.getAdapter();
	if (null != contactsAdapter) {
		contactsAdapter.notifyDataSetChanged();
		if (contactsAdapter.getCount() > 0) {

		} else {

		}

	}
}
 

public void refreshContactsLv() {
	if (null == mContactsLv) {
		return;
	}
	
	ViewUtil.hideView(mContactsIndexView);
	
	BaseAdapter contactsAdapter = (BaseAdapter) mContactsLv.getAdapter();
	if (null != contactsAdapter) {
		contactsAdapter.notifyDataSetChanged();
		if (contactsAdapter.getCount() > 0) {
			ViewUtil.showView(mContactsLv);
			ViewUtil.hideView(mSearchResultPromptTv);

		} else {
			ViewUtil.hideView(mContactsLv);
			ViewUtil.showView(mSearchResultPromptTv);

		}
	}
}
 

private void refreshT9SearchGv() {
	if (null == mT9SearchGv) {
		return;
	}

	BaseAdapter baseAdapter = (BaseAdapter) mT9SearchGv.getAdapter();
	Log.i(TAG, "getCount"+baseAdapter.getCount()+"");
	if (null != baseAdapter) {
		baseAdapter.notifyDataSetChanged();
		if (baseAdapter.getCount() > 0) {
			ViewUtil.showView(mT9SearchGv);
			ViewUtil.hideView(mSearchResultPromptTv);
		} else {
			ViewUtil.hideView(mT9SearchGv);
			ViewUtil.showView(mSearchResultPromptTv);
		}
	}
}
 

private void refreshQwertySearchGv() {
	if (null == mQwertySearchGv) {
		return;
	}

	BaseAdapter baseAdapter = (BaseAdapter) mQwertySearchGv.getAdapter();
	Log.i(TAG, "getCount"+baseAdapter.getCount()+"");
	if (null != baseAdapter) {
		baseAdapter.notifyDataSetChanged();
		if (baseAdapter.getCount() > 0) {
			ViewUtil.showView(mQwertySearchGv);
			ViewUtil.hideView(mSearchResultPromptTv);
		} else {
			ViewUtil.hideView(mQwertySearchGv);
			ViewUtil.showView(mSearchResultPromptTv);
		}
	}
}
 

/**
 * Notify a ListView that the data of it's adapter is changed.
 *
 * @return self
 */
public T dataChanged() {
    if (view instanceof AdapterView) {
        AdapterView<?> av = (AdapterView<?>) view;
        Adapter a = av.getAdapter();

        if (a instanceof BaseAdapter) {
            BaseAdapter ba = (BaseAdapter) a;
            ba.notifyDataSetChanged();
        }

    }


    return self();
}
 

@Override
public void onLoadAppInfoList(BaseAdapter adapter) {
    Log.d("MainApp", "加载数据咯");
    app_listView.setAdapter(adapter);

    adapter.notifyDataSetChanged();
}
 

public static void doFavorite(final Activity activity, final Status s,
        final BaseAdapter adapter) {
    final ActionResultHandler li = new ActionResultHandler() {
        @Override
        public void onActionSuccess(final int type, final String message) {
            if (type == Constants.TYPE_FAVORITES_CREATE) {
                s.favorited = true;
            } else {
                s.favorited = false;
            }
            adapter.notifyDataSetChanged();
        }
    };
    FanfouServiceManager.doFavorite(activity, s, li);
}
 

public static void doDelete(final Activity activity, final Status s,
        final BaseAdapter adapter) {
    final ActionResultHandler li = new ActionResultHandler() {
        @Override
        public void onActionSuccess(final int type, final String message) {
            adapter.notifyDataSetChanged();
        }
    };
    FanfouServiceManager.doStatusDelete(activity, s.id, li);
}
 

public static void doDelete(final Activity activity, final Status s,
        final BaseAdapter adapter, final List<Status> ss) {
    final ActionResultHandler li = new ActionResultHandler() {
        @Override
        public void onActionSuccess(final int type, final String message) {
            ss.remove(s);
            adapter.notifyDataSetChanged();
        }
    };
    FanfouServiceManager.doStatusDelete(activity, s.id, li);
}
 

private static void fetchPhotoAsync(final RecipientEntry entry, final Uri photoThumbnailUri, final BaseAdapter adapter, final ContentResolver mContentResolver) {
    final AsyncTask<Void, Void, byte[]> photoLoadTask = new AsyncTask<Void, Void, byte[]>() {
        @Override
        protected byte[] doInBackground(Void... params) {
            // First try running a query. Images for local contacts are
            // loaded by sending a query to the ContactsProvider.
            final Cursor photoCursor = mContentResolver.query(
                    photoThumbnailUri, PhotoQuery.PROJECTION, null, null, null);
            if (photoCursor != null) {
                try {
                    if (photoCursor.moveToFirst()) {
                        return photoCursor.getBlob(PhotoQuery.PHOTO);
                    }
                } finally {
                    photoCursor.close();
                }
            } else {
                // If the query fails, try streaming the URI directly.
                // For remote directory images, this URI resolves to the
                // directory provider and the images are loaded by sending
                // an openFile call to the provider.
                try {
                    InputStream is = mContentResolver.openInputStream(
                            photoThumbnailUri);
                    if (is != null) {
                        byte[] buffer = new byte[BUFFER_SIZE];
                        ByteArrayOutputStream baos = new ByteArrayOutputStream();
                        try {
                            int size;
                            while ((size = is.read(buffer)) != -1) {
                                baos.write(buffer, 0, size);
                            }
                        } finally {
                            is.close();
                        }
                        return baos.toByteArray();
                    }
                } catch (IOException ex) {
                    // ignore
                }
            }
            return null;
        }

        @Override
        protected void onPostExecute(final byte[] photoBytes) {
            entry.setPhotoBytes(photoBytes);
            if (photoBytes != null) {
                mPhotoCacheMap.put(photoThumbnailUri, photoBytes);
                if (adapter != null)
                    adapter.notifyDataSetChanged();
            }
        }
    };
    photoLoadTask.executeOnExecutor(AsyncTask.SERIAL_EXECUTOR);
}
 

public static Handler createListviewHandler(
		final PullToRefreshListView listview,
		final LinearLayout footerLayout, final BaseAdapter adapter) {
	return new Handler() {
		
		TextView tv = (TextView) footerLayout
				.findViewById(R.id.listview_foot_more);
		ProgressBar bar = (ProgressBar) footerLayout
				.findViewById(R.id.listview_foot_progress);

		@Override
		public void handleMessage(Message msg) {
			Log.i("TAG", "dealing...code:"+ msg.what);
			switch (msg.what) {
			case MyRobot.IS_NETWORK_LOADING:
				bar.setVisibility(View.VISIBLE);
				tv.setText("正在加载...");
				break;
			case MyRobot.IS_REFRESH_COMPLETE:
				adapter.notifyDataSetChanged();
				listview.setSelection(0);
				listview.onRefreshComplete(pull_to_refresh_update
						+ new Date().toLocaleString());
				bar.setVisibility(View.GONE);
				tv.setText("上拉松开加载更多");
				break;
			case MyRobot.IS_GETMORE_COMPLETE:
				adapter.notifyDataSetChanged();
				bar.setVisibility(View.GONE);
				tv.setText("上拉松开加载更多");
				break;
			case MyRobot.IS_NETWORK_ERROR:
				Toast.makeText(listview.getContext(), "网络连接失败",
						Toast.LENGTH_SHORT).show();
				break;
			case MyRobot.IS_REFRESH_ERROR:
				Toast.makeText(listview.getContext(), "数据刷新失败",
						Toast.LENGTH_SHORT).show();
				listview.setSelection(0);
				listview.onRefreshComplete(pull_to_refresh_update
						+ new Date().toLocaleString());
				break;
			case MyRobot.IS_GETMORE_ERROR:
				Toast.makeText(listview.getContext(), "网络连接失败",
						Toast.LENGTH_SHORT).show();
				bar.setVisibility(View.GONE);
				tv.setText("点击刷新");
				break;
			case MyRobot.LOAD_DATA_ALL:
				bar.setVisibility(View.GONE);
				tv.setText("没有更多数据了");
				break;
			case MyRobot.CLEAR_DATA:
				adapter.notifyDataSetChanged();
				break;
			default:
				Log.i("TAG", msg.what+ "no deal...");
				break;
			}
		}

	};
}
 

@Override
public void onLoadAppInfoUseList(BaseAdapter adapter) {
    appuse_listView.setAdapter(adapter);

    adapter.notifyDataSetChanged();


}