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Java Source Code
/*
* Copyright 2013 Chris Banes//www.java2s.com
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/package uk.co.senab.actionbarpulltorefresh.samples.stock;
import android.app.Activity;
import android.os.AsyncTask;
import android.os.Bundle;
import android.view.View;
import android.widget.AbsListView;
import android.widget.ArrayAdapter;
import android.widget.GridView;
import android.widget.ListAdapter;
import android.widget.TextView;
import uk.co.senab.actionbarpulltorefresh.library.ActionBarPullToRefresh;
import uk.co.senab.actionbarpulltorefresh.library.HeaderTransformer;
import uk.co.senab.actionbarpulltorefresh.library.Options;
import uk.co.senab.actionbarpulltorefresh.library.listeners.OnRefreshListener;
import uk.co.senab.actionbarpulltorefresh.library.PullToRefreshLayout;
import uk.co.senab.actionbarpulltorefresh.library.viewdelegates.AbsListViewDelegate;
/**
* This sample shows how to use ActionBar-PullToRefresh with a {@link android.widget.GridView
* GridView}, and manually creating (and attaching) a {@link PullToRefreshLayout} to the view.
*/publicclass GridViewActivity extends BaseSampleActivity
implements OnRefreshListener {
privatestatic String[] ITEMS = {"Abbaye de Belloc", "Abbaye du Mont des Cats", "Abertam",
"Abondance", "Ackawi", "Acorn", "Adelost", "Affidelice au Chablis", "Afuega'l Pitu",
"Airag", "Airedale", "Aisy Cendre", "Allgauer Emmentaler", "Abbaye de Belloc",
"Abbaye du Mont des Cats", "Abertam", "Abondance", "Ackawi", "Acorn", "Adelost",
"Affidelice au Chablis", "Afuega'l Pitu", "Airag", "Airedale", "Aisy Cendre",
"Allgauer Emmentaler"};
private PullToRefreshLayout mPullToRefreshLayout;
@Override
publicvoid onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_gridview);
GridView gridView = (GridView) findViewById(R.id.ptr_gridview);
ListAdapter adapter = new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1,
ITEMS);
gridView.setAdapter(adapter);
// Now find the PullToRefreshLayout and set it up
mPullToRefreshLayout = (PullToRefreshLayout) findViewById(R.id.ptr_layout);
ActionBarPullToRefresh.from(this)
.options(Options.create()
// Here we make the refresh scroll distance to 75% of the GridView height
.scrollDistance(.75f)
// Here we define a custom header layout which will be inflated and used
.headerLayout(R.layout.customised_header)
// Here we define a custom header transformer which will alter the header
// based on the current pull-to-refresh state
.headerTransformer(new CustomisedHeaderTransformer())
.build())
.allChildrenArePullable()
.listener(this)
// Here we'll set a custom ViewDelegate
.useViewDelegate(GridView.class, new AbsListViewDelegate())
.setup(mPullToRefreshLayout);
}
@Override
publicvoid onRefreshStarted(View view) {
/**
* Simulate Refresh with 4 seconds sleep
*/new AsyncTask<Void, Void, Void>() {
@Override
protected Void doInBackground(Void... params) {
try {
Thread.sleep(Constants.SIMULATED_REFRESH_LENGTH);
} catch (InterruptedException e) {
e.printStackTrace();
}
return null;
}
@Override
protectedvoid onPostExecute(Void result) {
super.onPostExecute(result);
// Notify PullToRefreshLayout that the refresh has finished
mPullToRefreshLayout.setRefreshComplete();
}
}.execute();
}
/**
* Here's a customised header transformer which displays the scroll progress as text.
*/staticclass CustomisedHeaderTransformer extends HeaderTransformer {
private View mHeaderView;
private TextView mMainTextView;
private TextView mProgressTextView;
@Override
publicvoid onViewCreated(Activity activity, View headerView) {
mHeaderView = headerView;
mMainTextView = (TextView) headerView.findViewById(R.id.ptr_text);
mProgressTextView = (TextView) headerView.findViewById(R.id.ptr_text_secondary);
}
@Override
publicvoid onReset() {
mMainTextView.setVisibility(View.VISIBLE);
mMainTextView.setText(R.string.pull_to_refresh_pull_label);
mProgressTextView.setVisibility(View.GONE);
mProgressTextView.setText("");
}
@Override
publicvoid onPulled(float percentagePulled) {
mProgressTextView.setVisibility(View.VISIBLE);
mProgressTextView.setText(Math.round(100f * percentagePulled) + "%");
}
@Override
publicvoid onRefreshStarted() {
mMainTextView.setText(R.string.pull_to_refresh_refreshing_label);
mProgressTextView.setVisibility(View.GONE);
}
@Override
publicvoid onReleaseToRefresh() {
mMainTextView.setText(R.string.pull_to_refresh_release_label);
}
@Override
publicvoid onRefreshMinimized() {
// In this header transformer, we will ignore this call
}
@Override
publicboolean showHeaderView() {
finalboolean changeVis = mHeaderView.getVisibility() != View.VISIBLE;
if (changeVis) {
mHeaderView.setVisibility(View.VISIBLE);
}
return changeVis;
}
@Override
publicboolean hideHeaderView() {
finalboolean changeVis = mHeaderView.getVisibility() == View.VISIBLE;
if (changeVis) {
mHeaderView.setVisibility(View.GONE);
}
return changeVis;
}
}
}