Java tutorial
/* * Copyright (C) 2011 The Android Open Source Project * Copyright (C) 2011 Jake Wharton * * 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 utils.widget.vpi_lib; import android.annotation.SuppressLint; import android.content.Context; import android.graphics.Typeface; import android.support.v4.view.PagerAdapter; import android.support.v4.view.ViewPager; import android.support.v4.view.ViewPager.OnPageChangeListener; import android.util.AttributeSet; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; import android.widget.HorizontalScrollView; import android.widget.ImageView; import android.widget.LinearLayout; import android.widget.TextView; import ca.dgg.e_contract.R; import static android.view.ViewGroup.LayoutParams.MATCH_PARENT; import static android.view.ViewGroup.LayoutParams.WRAP_CONTENT; /** * This widget implements the dynamic action bar tab behavior that can change * across different configurations or circumstances. */ @SuppressLint({ "NewApi", "ResourceAsColor" }) public class TabPageIndicator_Custom extends HorizontalScrollView implements PageIndicator { /** Title text used when no title is provided by the adapter. */ private static final CharSequence EMPTY_TITLE = ""; /** * Interface for a callback when the selected tab has been reselected. */ public interface OnTabReselectedListener { /** * Callback when the selected tab has been reselected. * * @param position * Position of the current center item. */ void onTabReselected(int position); } private Runnable mTabSelector; @SuppressLint("ResourceAsColor") @SuppressWarnings("unused") // private final OnClickListener mTabClickListener = new OnClickListener() { // public void onClick(final View view) { // final RippleView rippleView = (RippleView) mTabLayout // .findViewById(R.id.ripTabItem); // rippleView.setRippleColor(R.color.rippelColorOrange); // rippleView // .setOnRippleCompleteListener(new RippleView.OnRippleCompleteListener() { // // @Override // public void onComplete(RippleView rippleView) { // TabView tabView = (TabView) view; // final int oldSelected = mViewPager.getCurrentItem(); // final int newSelected = tabView.getIndex(); // mViewPager.setCurrentItem(newSelected); // if (oldSelected == newSelected // && mTabReselectedListener != null) { // mTabReselectedListener // .onTabReselected(newSelected); // } // } // // }); // // } // }; private final IcsLinearLayout mTabLayout; private ViewPager mViewPager; private ViewPager.OnPageChangeListener mListener; private int mMaxTabWidth; private int mSelectedTabIndex; private OnTabReselectedListener mTabReselectedListener; public TabPageIndicator_Custom(Context context) { this(context, null); } public TabPageIndicator_Custom(Context context, AttributeSet attrs) { super(context, attrs); setHorizontalScrollBarEnabled(false); mTabLayout = new IcsLinearLayout(context, R.attr.vpiTabPageIndicatorStyle); addView(mTabLayout, new ViewGroup.LayoutParams(WRAP_CONTENT, MATCH_PARENT)); } public void setOnTabReselectedListener(OnTabReselectedListener listener) { mTabReselectedListener = listener; } @Override public void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { final int widthMode = MeasureSpec.getMode(widthMeasureSpec); final boolean lockedExpanded = widthMode == MeasureSpec.EXACTLY; setFillViewport(lockedExpanded); final int childCount = mTabLayout.getChildCount(); if (childCount > 1 && (widthMode == MeasureSpec.EXACTLY || widthMode == MeasureSpec.AT_MOST)) { if (childCount > 2) { mMaxTabWidth = (int) (MeasureSpec.getSize(widthMeasureSpec) * 0.4f); } else { mMaxTabWidth = MeasureSpec.getSize(widthMeasureSpec) / 2; } } else { mMaxTabWidth = -1; } final int oldWidth = getMeasuredWidth(); super.onMeasure(widthMeasureSpec, heightMeasureSpec); final int newWidth = getMeasuredWidth(); if (lockedExpanded && oldWidth != newWidth) { // Recenter the tab display if we're at a new (scrollable) size. setCurrentItem(mSelectedTabIndex); } } private void animateToTab(final int position) { final View tabView = mTabLayout.getChildAt(position); if (mTabSelector != null) { removeCallbacks(mTabSelector); } mTabSelector = new Runnable() { public void run() { final int scrollPos = tabView.getLeft() - (getWidth() - tabView.getWidth()) / 2; smoothScrollTo(scrollPos, 0); mTabSelector = null; } }; post(mTabSelector); } @Override public void onAttachedToWindow() { super.onAttachedToWindow(); if (mTabSelector != null) { // Re-post the selector we saved post(mTabSelector); } } @Override public void onDetachedFromWindow() { super.onDetachedFromWindow(); if (mTabSelector != null) { removeCallbacks(mTabSelector); } } View parentView; @SuppressLint("InflateParams") private void addTab(int index, CharSequence text, int iconResId, String url) { // TODO final TabView tabView = new TabView(getContext()); tabView.mIndex = index; LinearLayout linearLayout = new LinearLayout(getContext()); linearLayout.setOrientation(LinearLayout.VERTICAL); linearLayout.setTag(index); linearLayout.setFocusable(true); linearLayout.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { LinearLayout tabView = (LinearLayout) v; final int oldSelected = mViewPager.getCurrentItem(); final int newSelected = Integer.valueOf(tabView.getTag().toString()); mViewPager.setCurrentItem(newSelected); if (oldSelected == newSelected && mTabReselectedListener != null) { mTabReselectedListener.onTabReselected(newSelected); } } }); parentView = LayoutInflater.from(getContext()).inflate(R.layout.vpi_tap_custom, null); ImageView img = (ImageView) parentView.findViewById(R.id.tabImage); // img.setImageResource(iconResId); /* * ProgressBar pbBar = (ProgressBar) * view.findViewById(R.id.progressBar_tab_custom); */ // LinearLayout layout = (LinearLayout) // view.findViewById(R.id.vpi_custom_layout); TextView txtTitle = (TextView) parentView.findViewById(R.id.vpi_custom_txt_Title); TextView txtBottom = (TextView) parentView.findViewById(R.id.vpi_custom_txt_btm); // TODO // LinearLayout.LayoutParams layoutParams = new // LinearLayout.LayoutParams(WRAP_CONTENT, WRAP_CONTENT); // layout.setLayoutParams(layoutParams); txtTitle.setText(text); txtTitle.setTextColor(getResources().getColor(R.color.vpi_non_focus)); txtBottom.setBackgroundColor(getResources().getColor(R.color.vpi_non_focus)); /* * AQuery aq = new AQuery(getContext()); * aq.id(img).progress(pbBar).image(url, false, true, 0, * R.drawable.img_default_category, new BitmapAjaxCallback() { * * @SuppressLint("NewApi") @SuppressWarnings("deprecation") * * @Override protected void callback(String url, ImageView iv, Bitmap * bm, AjaxStatus status) { int sdk = android.os.Build.VERSION.SDK_INT; * if(sdk < android.os.Build.VERSION_CODES.JELLY_BEAN) { * iv.setBackgroundDrawable(new * BitmapDrawable(getContext().getResources(), bm)); } else { * iv.setBackground(new BitmapDrawable(getContext().getResources(), * bm)); } } }); */ linearLayout.addView(parentView); linearLayout.addView(tabView); mTabLayout.addView(linearLayout, new LinearLayout.LayoutParams(MATCH_PARENT, MATCH_PARENT, 1)); } @Override public void onPageScrollStateChanged(int arg0) { if (mListener != null) { mListener.onPageScrollStateChanged(arg0); } } @Override public void onPageScrolled(int arg0, float arg1, int arg2) { if (mListener != null) { mListener.onPageScrolled(arg0, arg1, arg2); } } @Override public void onPageSelected(int arg0) { setCurrentItem(arg0); if (mListener != null) { mListener.onPageSelected(arg0); } } @Override public void setViewPager(ViewPager view) { if (mViewPager == view) { return; } if (mViewPager != null) { mViewPager.setOnPageChangeListener(null); } final PagerAdapter adapter = view.getAdapter(); if (adapter == null) { throw new IllegalStateException("ViewPager does not have adapter instance."); } mViewPager = view; view.setOnPageChangeListener(this); notifyDataSetChanged(); } public void notifyDataSetChanged() { mTabLayout.removeAllViews(); PagerAdapter adapter = mViewPager.getAdapter(); IconPagerAdapter iconAdapter = null; if (adapter instanceof IconPagerAdapter) { iconAdapter = (IconPagerAdapter) adapter; } final int count = adapter.getCount(); for (int i = 0; i < count; i++) { CharSequence title = adapter.getPageTitle(i); if (title == null) { title = EMPTY_TITLE; } int iconResId = 0; if (iconAdapter != null) { iconResId = iconAdapter.getIconResId(i); } String iconUrl = ""; if (iconAdapter != null) { iconUrl = iconAdapter.getIconUrl(i); } addTab(i, title, iconResId, iconUrl); } if (mSelectedTabIndex > count) { mSelectedTabIndex = count - 1; } setCurrentItem(mSelectedTabIndex); requestLayout(); } @Override public void setViewPager(ViewPager view, int initialPosition) { setViewPager(view); setCurrentItem(initialPosition); } @Override public void setCurrentItem(final int item) { // final RippleView rippleView = (RippleView) mTabLayout // .findViewById(R.id.ripTabItem); // rippleView.setRippleColor(R.color.rippelColorOrange); // rippleView // .setOnRippleCompleteListener(new // RippleView.OnRippleCompleteListener() { // // @Override // public void onComplete(RippleView rippleView) { if (mViewPager == null) { throw new IllegalStateException("ViewPager has not been bound."); } mSelectedTabIndex = item; mViewPager.setCurrentItem(item); final int tabCount = mTabLayout.getChildCount(); for (int i = 0; i < tabCount; i++) { final View child = mTabLayout.getChildAt(i); final boolean isSelected = (i == item); child.setSelected(isSelected); // TODO - Trigger (Arrow) Setting // Toast.makeText(getContext(), // "Selected ID :"+item, // Toast.LENGTH_SHORT).show(); // ImageView img = (ImageView) // child.findViewById(R.id.img_trigger); TextView txtTitle = (TextView) child.findViewById(R.id.vpi_custom_txt_Title); TextView txtBottom = (TextView) child.findViewById(R.id.vpi_custom_txt_btm); if (isSelected) { animateToTab(item); txtBottom.setBackgroundColor(getResources().getColor(R.color.vpi_focus)); txtBottom.setLayoutParams(new LinearLayout.LayoutParams(LinearLayout.LayoutParams.MATCH_PARENT, 8)); txtTitle.setTextColor(getResources().getColor(R.color.vpi_focus)); txtTitle.setTypeface(null, Typeface.BOLD); // img.setVisibility(View.VISIBLE); } else { txtBottom.setBackgroundColor(getResources().getColor(R.color.vpi_non_focus)); txtBottom.setLayoutParams(new LinearLayout.LayoutParams(LinearLayout.LayoutParams.MATCH_PARENT, 1)); txtTitle.setTextColor(getResources().getColor(R.color.vpi_non_focus)); txtTitle.setTypeface(null, Typeface.NORMAL); // img.setVisibility(View.INVISIBLE); } } // } // // }); } @Override public void setOnPageChangeListener(OnPageChangeListener listener) { mListener = listener; } private class TabView extends TextView { private int mIndex; public TabView(Context context) { super(context, null, R.attr.vpiTabPageIndicatorStyle); } @Override public void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { super.onMeasure(widthMeasureSpec, heightMeasureSpec); // Re-measure if we went beyond our maximum size. if (mMaxTabWidth > 0 && getMeasuredWidth() > mMaxTabWidth) { super.onMeasure(MeasureSpec.makeMeasureSpec(mMaxTabWidth, MeasureSpec.EXACTLY), heightMeasureSpec); } } public int getIndex() { return mIndex; } } }