Java tutorial
/* * This is the source code of Telegram for Android v. 1.3.2. * It is licensed under GNU GPL v. 2 or later. * You should have received a copy of the license in this archive (see LICENSE). * * Copyright Nikolai Kudashov, 2013. */ package hoahong.facebook.messenger.ui; import java.util.ArrayList; import hoahong.facebook.messenger.R; import android.annotation.TargetApi; import android.content.Context; import android.database.DataSetObserver; import android.graphics.drawable.GradientDrawable; import android.os.Build; import android.support.v4.view.PagerAdapter; import android.support.v4.view.ViewPager; import android.text.TextUtils; import android.util.AttributeSet; import android.view.View; import android.view.ViewGroup; import android.widget.BaseAdapter; import android.widget.FrameLayout; import android.widget.GridView; import android.widget.ImageView; import android.widget.LinearLayout; import android.widget.TextView; public class EmojiView extends LinearLayout { private ArrayList<EmojiGridAdapter> adapters = new ArrayList<EmojiGridAdapter>(); private int[] icons = { R.drawable.ic_emoji_recent, R.drawable.ic_emoji_smile, R.drawable.ic_emoji_flower, R.drawable.ic_emoji_bell, R.drawable.ic_emoji_car, R.drawable.ic_emoji_symbol }; private Listener listener; private ViewPager pager; private FrameLayout recentsWrap; private ArrayList<GridView> views = new ArrayList<GridView>(); public EmojiView(Context paramContext) { super(paramContext); init(); } public EmojiView(Context paramContext, AttributeSet paramAttributeSet) { super(paramContext, paramAttributeSet); init(); } @TargetApi(Build.VERSION_CODES.HONEYCOMB) public EmojiView(Context paramContext, AttributeSet paramAttributeSet, int paramInt) { super(paramContext, paramAttributeSet, paramInt); init(); } private void addToRecent(long paramLong) { if (this.pager.getCurrentItem() == 0) { return; } ArrayList<Long> localArrayList = new ArrayList<Long>(); long[] currentRecent = Emoji.data[0]; boolean was = false; for (long aCurrentRecent : currentRecent) { if (paramLong == aCurrentRecent) { localArrayList.add(0, paramLong); was = true; } else { localArrayList.add(aCurrentRecent); } } if (!was) { localArrayList.add(0, paramLong); } Emoji.data[0] = new long[Math.min(localArrayList.size(), 50)]; for (int q = 0; q < Emoji.data[0].length; q++) { Emoji.data[0][q] = localArrayList.get(q); } adapters.get(0).data = Emoji.data[0]; adapters.get(0).notifyDataSetChanged(); saveRecents(); } private String convert(long paramLong) { String str = ""; for (int i = 0;; i++) { if (i >= 4) { return str; } int j = (int) (0xFFFF & paramLong >> 16 * (3 - i)); if (j != 0) { str = str + (char) j; } } } private void init() { setOrientation(LinearLayout.VERTICAL); for (int i = 0; i < Emoji.data.length; i++) { GridView gridView = new GridView(getContext()); if (Utils.isTablet()) { gridView.setColumnWidth(Utils.dp(60)); } else { gridView.setColumnWidth(Utils.dp(45)); } gridView.setNumColumns(-1); views.add(gridView); EmojiGridAdapter localEmojiGridAdapter = new EmojiGridAdapter(Emoji.data[i]); gridView.setAdapter(localEmojiGridAdapter); adapters.add(localEmojiGridAdapter); } setBackgroundDrawable( new GradientDrawable(GradientDrawable.Orientation.TOP_BOTTOM, new int[] { -14145496, -16777216 })); pager = new ViewPager(getContext()); pager.setAdapter(new EmojiPagesAdapter()); PagerSlidingTabStrip tabs = new PagerSlidingTabStrip(getContext()); tabs.setViewPager(pager); tabs.setShouldExpand(true); tabs.setIndicatorColor(0xff33b5e5); tabs.setIndicatorHeight(Utils.dpf(2.0f)); tabs.setUnderlineHeight(Utils.dpf(2.0f)); tabs.setUnderlineColor(0x66000000); tabs.setTabBackground(0); LinearLayout localLinearLayout = new LinearLayout(getContext()); localLinearLayout.setOrientation(LinearLayout.HORIZONTAL); localLinearLayout.addView(tabs, new LinearLayout.LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.MATCH_PARENT, 1.0f)); ImageView localImageView = new ImageView(getContext()); localImageView.setImageResource(R.drawable.ic_emoji_backspace); localImageView.setScaleType(ImageView.ScaleType.CENTER); localImageView.setBackgroundResource(R.drawable.bg_emoji_bs); localImageView.setOnClickListener(new View.OnClickListener() { public void onClick(View view) { if (EmojiView.this.listener != null) { EmojiView.this.listener.onBackspace(); } } }); localLinearLayout.addView(localImageView, new LinearLayout.LayoutParams(Utils.dp(61), LayoutParams.MATCH_PARENT)); recentsWrap = new FrameLayout(getContext()); recentsWrap.addView(views.get(0)); TextView localTextView = new TextView(getContext()); localTextView.setText("No recent"); localTextView.setTextSize(18.0f); localTextView.setTextColor(-7829368); localTextView.setGravity(17); recentsWrap.addView(localTextView); views.get(0).setEmptyView(localTextView); addView(localLinearLayout, new LinearLayout.LayoutParams(-1, Utils.dpf(48.0f))); addView(pager); loadRecents(); if (Emoji.data[0] == null || Emoji.data[0].length == 0) { pager.setCurrentItem(1); } } private void saveRecents() { ArrayList<Long> localArrayList = new ArrayList<Long>(); long[] arrayOfLong = Emoji.data[0]; int i = arrayOfLong.length; for (int j = 0;; j++) { if (j >= i) { getContext().getSharedPreferences("emoji", 0).edit() .putString("recents", TextUtils.join(",", localArrayList)).commit(); return; } localArrayList.add(arrayOfLong[j]); } } public void loadRecents() { String str = getContext().getSharedPreferences("emoji", 0).getString("recents", ""); String[] arrayOfString = null; if ((str != null) && (str.length() > 0)) { arrayOfString = str.split(","); Emoji.data[0] = new long[arrayOfString.length]; } if (arrayOfString != null) { for (int i = 0; i < arrayOfString.length; i++) { Emoji.data[0][i] = Long.parseLong(arrayOfString[i]); } adapters.get(0).data = Emoji.data[0]; adapters.get(0).notifyDataSetChanged(); } } public void onMeasure(int paramInt1, int paramInt2) { super.onMeasure(View.MeasureSpec.makeMeasureSpec(View.MeasureSpec.getSize(paramInt1), MeasureSpec.EXACTLY), View.MeasureSpec.makeMeasureSpec(View.MeasureSpec.getSize(paramInt2), MeasureSpec.EXACTLY)); } public void setListener(Listener paramListener) { this.listener = paramListener; } public void invalidateViews() { for (GridView gridView : views) { if (gridView != null) { gridView.invalidateViews(); } } } private class EmojiGridAdapter extends BaseAdapter { long[] data; public EmojiGridAdapter(long[] arg2) { this.data = arg2; } public int getCount() { return data.length; } public Object getItem(int i) { return null; } public long getItemId(int i) { return data[i]; } public View getView(int i, View view, ViewGroup paramViewGroup) { ImageView imageView = (ImageView) view; if (imageView == null) { imageView = new ImageView(EmojiView.this.getContext()) { public void onMeasure(int paramAnonymousInt1, int paramAnonymousInt2) { setMeasuredDimension(View.MeasureSpec.getSize(paramAnonymousInt1), View.MeasureSpec.getSize(paramAnonymousInt1)); } }; imageView.setOnClickListener(new View.OnClickListener() { public void onClick(View view) { if (EmojiView.this.listener != null) { EmojiView.this.listener.onEmojiSelected(EmojiView.this.convert((Long) view.getTag())); } EmojiView.this.addToRecent((Long) view.getTag()); } }); imageView.setBackgroundResource(R.drawable.list_selector); imageView.setScaleType(ImageView.ScaleType.CENTER); } imageView.setImageDrawable(Emoji.getEmojiBigDrawable(data[i])); imageView.setTag(data[i]); return imageView; } @Override public void unregisterDataSetObserver(DataSetObserver observer) { if (observer != null) { super.unregisterDataSetObserver(observer); } } } private class EmojiPagesAdapter extends PagerAdapter implements PagerSlidingTabStrip.IconTabProvider { private EmojiPagesAdapter() { } public void destroyItem(ViewGroup paramViewGroup, int paramInt, Object paramObject) { View localObject; if (paramInt == 0) { localObject = EmojiView.this.recentsWrap; } else { localObject = EmojiView.this.views.get(paramInt); } paramViewGroup.removeView(localObject); } public int getCount() { return EmojiView.this.views.size(); } public int getPageIconResId(int paramInt) { return EmojiView.this.icons[paramInt]; } public Object instantiateItem(ViewGroup paramViewGroup, int paramInt) { View localObject; if (paramInt == 0) { localObject = EmojiView.this.recentsWrap; } else { localObject = EmojiView.this.views.get(paramInt); } paramViewGroup.addView(localObject); return localObject; } public boolean isViewFromObject(View paramView, Object paramObject) { return paramView == paramObject; } @Override public void unregisterDataSetObserver(DataSetObserver observer) { if (observer != null) { super.unregisterDataSetObserver(observer); } } } public static abstract interface Listener { public abstract void onBackspace(); public abstract void onEmojiSelected(String paramString); } }