Java tutorial
/* * Copyright 2012 Google Inc. * * 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 com.arquitetaweb.comanda.fragment; import java.util.List; import android.annotation.SuppressLint; import android.app.ProgressDialog; import android.graphics.Color; import android.os.Build; import android.os.Bundle; import android.os.Handler; import android.support.v4.app.Fragment; import android.support.v4.app.ListFragment; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; import android.view.ViewTreeObserver; import android.view.animation.TranslateAnimation; import android.widget.AbsListView; import android.widget.AbsListView.OnScrollListener; import android.widget.Button; import android.widget.LinearLayout; import android.widget.Toast; import com.arquitetaweb.comanda.R; import com.arquitetaweb.comanda.activity.DetalhesMesaActivity; import com.arquitetaweb.comanda.adapter.ConsumoAdapter; import com.arquitetaweb.comanda.controller.ConsumoController; import com.arquitetaweb.comanda.interfaces.AsyncTaskListener; import com.arquitetaweb.comanda.model.ConsumoModel; import com.arquitetaweb.comanda.model.MesaModel; import com.arquitetaweb.comanda.model.model_enum.SituacaoMesa; import com.arquitetaweb.comum.component.ListViewCustom; public class ConsumoFragment extends ListFragment implements AsyncTaskListener { private ProgressDialog progressDialog; private ConsumoController controller; private MesaModel mesa; private Fragment fragment; private ListViewCustom mListView; private LinearLayout mQuickReturnView; //private View mHeader; private static final int STATE_ONSCREEN = 0; private static final int STATE_OFFSCREEN = 1; private static final int STATE_RETURNING = 2; private int mState = STATE_ONSCREEN; private int mQuickReturnHeight; private int mScrollY; private int mMinRawY = 0; private TranslateAnimation anim; @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { View view = inflater.inflate(R.layout.fragment_consumo, null); mQuickReturnView = (LinearLayout) view.findViewById(R.id.footer1); //mHeader = inflater.inflate(R.layout.consumo_header, null); fragment = this; return view; } @SuppressWarnings("unused") private void showFooter(Integer seconds) { Handler handler = null; handler = new Handler(); handler.postDelayed(new Runnable() { public void run() { mQuickReturnView.setTranslationY(0); } }, seconds * 1000); } @Override public void onActivityCreated(Bundle savedInstanceState) { super.onActivityCreated(savedInstanceState); mesa = ((DetalhesMesaActivity) this.getActivity()).getMesaModel(); progressDialog = new ProgressDialog(this.getActivity()); controller = new ConsumoController(fragment, progressDialog, mesa.id); controller.sincronizar(); // onTaskComplete callback Button btnFechaConta = (Button) fragment.getView().findViewById(R.id.fechar_conta); if (mesa.situacao == SituacaoMesa.EmConta) { btnFechaConta.setText("Mesa J Fechada"); btnFechaConta.setBackgroundColor(Color.RED); } else { btnFechaConta.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View arg0) { controller.fecharConta(); // onTaskComplete callback } }); } } @Override public void onDestroy() { if (progressDialog != null) { progressDialog.dismiss(); progressDialog = null; } super.onDestroy(); } @Override public void onTaskComplete(List<ConsumoModel> result) { ConsumoAdapter adapter = new ConsumoAdapter(this.getActivity(), result); setListAdapter(adapter); mListView = (ListViewCustom) getListView(); //mListView.addHeaderView(mHeader); mListView.getViewTreeObserver().addOnGlobalLayoutListener(new ViewTreeObserver.OnGlobalLayoutListener() { @Override public void onGlobalLayout() { mQuickReturnHeight = mQuickReturnView.getHeight(); mListView.computeScrollY(); } }); mListView.setOnScrollListener(new OnScrollListener() { @SuppressLint("NewApi") @Override public void onScroll(AbsListView view, int firstVisibleItem, int visibleItemCount, int totalItemCount) { int translationY = bottonAnim(); /** this can be used if the build is below honeycomb **/ if (Build.VERSION.SDK_INT <= Build.VERSION_CODES.HONEYCOMB) { mQuickReturnView.startAnimation(anim); } else { mQuickReturnView.setTranslationY(translationY); } } // private int animation() { // mScrollYtop = 0; // int translationY = 0; // // if (mListView.scrollYIsComputed()) { // mScrollYtop = mListView.getComputedScrollY(); // } // // rawY = mPlaceHolder.getTop() // - Math.min( // mCachedVerticalScrollRange // - mListView.getHeight(), mScrollYtop); // // switch (mState) { // case STATE_OFFSCREEN: // if (rawY <= mMinRawYtop) { // mMinRawYtop = rawY; // } else { // mState = STATE_RETURNING; // } // translationY = rawY; // break; // // case STATE_ONSCREEN: // if (rawY < -mQuickReturnHeightTop) { // mState = STATE_OFFSCREEN; // mMinRawYtop = rawY; // } // translationY = rawY; // break; // // case STATE_RETURNING: // // if (translationY > 0) { // translationY = 0; // mMinRawYtop = rawY - mQuickReturnHeightTop; // } // // else if (rawY > 0) { // mState = STATE_ONSCREEN; // translationY = rawY; // } // // else if (translationY < -mQuickReturnHeightTop) { // mState = STATE_OFFSCREEN; // mMinRawYtop = rawY; // // } else if (mQuickReturnViewTop.getTranslationY() != 0 // && !noAnimation) { // noAnimation = true; // animTop = new TranslateAnimation(0, 0, // -mQuickReturnHeightTop, 0); // animTop.setFillAfter(true); // animTop.setDuration(250); // mQuickReturnViewTop.startAnimation(animTop); // animTop.setAnimationListener(new AnimationListener() { // // @Override // public void onAnimationStart(Animation animation) { // // TODO Auto-generated method stub // // } // // @Override // public void onAnimationRepeat(Animation animation) { // // TODO Auto-generated method stub // // } // // @Override // public void onAnimationEnd(Animation animation) { // noAnimation = false; // mMinRawYtop = rawY; // mState = STATE_EXPANDED; // } // }); // } // break; // // case STATE_EXPANDED: // if (rawY < mMinRawYtop - 2 && !noAnimation) { // noAnimation = true; // animTop = new TranslateAnimation(0, 0, 0, // -mQuickReturnHeightTop); // animTop.setFillAfter(true); // animTop.setDuration(250); // animTop.setAnimationListener(new AnimationListener() { // // @Override // public void onAnimationStart(Animation animation) { // } // // @Override // public void onAnimationRepeat(Animation animation) { // // } // // @Override // public void onAnimationEnd(Animation animation) { // noAnimation = false; // mState = STATE_OFFSCREEN; // } // }); // mQuickReturnViewTop.startAnimation(animTop); // } else if (translationY > 0) { // translationY = 0; // mMinRawYtop = rawY - mQuickReturnHeightTop; // } // // else if (rawY > 0) { // mState = STATE_ONSCREEN; // translationY = rawY; // } // // else if (translationY < -mQuickReturnHeightTop) { // mState = STATE_OFFSCREEN; // mMinRawYtop = rawY; // } else { // mMinRawYtop = rawY; // } // } // return translationY; // } private int bottonAnim() { // bottom mScrollY = 0; int translationY = 0; if (mListView.scrollYIsComputed()) { mScrollY = mListView.getComputedScrollY(); } int rawY = mScrollY; switch (mState) { case STATE_OFFSCREEN: if (rawY >= mMinRawY) { mMinRawY = rawY; } else { mState = STATE_RETURNING; } translationY = rawY; break; case STATE_ONSCREEN: if (rawY > mQuickReturnHeight) { mState = STATE_OFFSCREEN; mMinRawY = rawY; } translationY = rawY; break; case STATE_RETURNING: translationY = (rawY - mMinRawY) + mQuickReturnHeight; if (translationY < 0) { translationY = 0; mMinRawY = rawY + mQuickReturnHeight; } if (rawY == 0) { mState = STATE_ONSCREEN; translationY = 0; } if (translationY > mQuickReturnHeight) { mState = STATE_OFFSCREEN; mMinRawY = rawY; } break; } return translationY; } @Override public void onScrollStateChanged(AbsListView view, int scrollState) { // } }); } @Override public void onClosedComplete(Boolean result) { if (result) { ((DetalhesMesaActivity) this.getActivity()).onBackPressed(); Toast toast = Toast.makeText(getActivity(), "Conta fechada com sucesso!", Toast.LENGTH_SHORT); toast.show(); } } }