Android怎么仿直播类app赠送礼物功能

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直播界面

实现的是播放本地的视频文件：

/** * 直播界面，用于对接直播功能 */public class LiveFrag extends Fragment { private ImageView img_thumb; private VideoView video_view; @Nullable @Override public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) { View view = inflater.inflate(R.layout.frag_live, null); img_thumb = view.findViewById(R.id.img_thumb); img_thumb.setVisibility(View.GONE); video_view = view.findViewById(R.id.video_view); video_view.setVisibility(View.VISIBLE); video_view.setVideoURI(Uri.parse("android.resource://" + getActivity().getPackageName() + "/" + R.raw.video_1)); video_view.start(); video_view.setOnCompletionListener(new MediaPlayer.OnCompletionListener() { @Override public void onCompletion(MediaPlayer mp) { video_view.setVideoURI(Uri.parse("android.resource://" + getActivity().getPackageName() + "/" + R.raw.video_1)); //或 //mVideoView.setVideoPath(Uri.parse(_filePath)); video_view.start(); } }); return view; }}

布局文件 frag_live.xml 如下：

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical"> <VideoView android:id="@+id/video_view" android:layout_width="match_parent" android:layout_height="match_parent" android:clickable="false" android:focusable="false" android:visibility="gone" /> <ImageView android:id="@+id/img_thumb" android:layout_width="match_parent" android:layout_height="match_parent" android:clickable="false" android:focusable="false" android:scaleType="centerCrop" android:src="@mipmap/img_video_1" android:visibility="visible" /></LinearLayout>

滑动隐藏效果

需要实现的效果如下：

自定义DialogFragment，使用ViewPager，第一个为空的Fragment，第二个为我们需要的Fragment，左右滑动来切换显示和隐藏效果。

观众功能交互页面 InteractiveFrag 如下:

/** * 观众功能交互页面, 滑动隐藏效果 */public class InteractiveFrag extends DialogFragment { public View view; public Context myContext; private ViewPager vp_interactive; private LayerFrag layerFrag; @Override public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) { view = inflater.inflate(R.layout.frag_interactive, null); // 初始化 initView(); initData(); return view; } /** * 初始化View */ public void initView() { vp_interactive = view.findViewById(R.id.vp_interactive); } /** * 初始化数据 */ public void initData() { // EmptyFrag：什么都没有 // LayerFrag：交互界面 // 这样就达到了滑动隐藏交互的需求 vp_interactive.setAdapter(new FragmentPagerAdapter(getChildFragmentManager()) { @Override public int getCount() { return 2; } @Override public Fragment getItem(int position) { if (position == 0) { return new EmptyFrag(); // 返回空界面的fragment } else if (position == 1) { return layerFrag = new LayerFrag(); // 返回交互界面的frag } else { // 设置默认 return new EmptyFrag(); } } }); // 设置默认显示交互界面 vp_interactive.setCurrentItem(1); // 同时将界面改为resize已达到软键盘弹出时Fragment不会跟随移动 getDialog().getWindow().setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_ADJUST_RESIZE); } @Override public Dialog onCreateDialog(Bundle savedInstanceState) { // 设置DialogFragment的样式，这里的代码最好还是用我的，大家不要改动 Dialog dialog = new Dialog(getActivity(), R.style.MainDialog) { @Override public void onBackPressed() { super.onBackPressed(); getActivity().finish(); } }; return dialog; }}

frag_interactive.xml文件如下：

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical" > <androidx.viewpager.widget.ViewPager android:id="@+id/vp_interactive" android:layout_width="match_parent" android:layout_height="match_parent" /></LinearLayout>

用户交互页 LayerFrag：

public class LayerFrag extends Fragment { @Nullable @Override public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) { return inflater.inflate(R.layout.frag_layer, null); }}

frag_layer：

<?xml version="1.0" encoding="utf-8"?><RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:app="http://schemas.android.com/apk/res-auto" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical"> <LinearLayout android:id="@+id/ll_anchor" android:layout_width="match_parent" android:layout_height="wrap_content" android:gravity="center_vertical" android:orientation="horizontal" android:paddingLeft="10dp" android:paddingTop="10dp"> <RelativeLayout android:layout_width="wrap_content" android:layout_height="wrap_content"> <LinearLayout android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_centerVertical="true" android:background="@drawable/bg_radius_top_black" android:gravity="center_vertical" android:orientation="vertical" android:paddingLeft="55dp" android:paddingTop="2dp" android:paddingRight="10dp" android:paddingBottom="2dp"> <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="十三妹哦" android:textColor="@android:color/white" android:textSize="12sp" /> <LinearLayout android:layout_width="wrap_content" android:layout_height="wrap_content" android:gravity="center_vertical" android:orientation="horizontal"> <ImageView android:layout_width="35dp" android:layout_height="20dp" android:src="@drawable/hani_icon_tag_exp" /> <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginLeft="5dp" android:text="17万" android:textColor="@android:color/white" android:textSize="10sp" /> </LinearLayout> </LinearLayout> <com.hongx.zhibo.utils.CircleImageView android:id="@+id/lv_anchorIcon" android:layout_width="50dp" android:layout_height="50dp" android:src="@drawable/zf" app:border_color="@color/colorWhite" app:border_width="1dp" /> </RelativeLayout> <com.hongx.zhibo.utils.HorizontalListView android:id="@+id/hlv_audience" android:layout_width="match_parent" android:layout_height="45dp" android:layout_marginLeft="10dp" /> </LinearLayout> <RelativeLayout android:id="@+id/rl_num" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_below="@+id/ll_anchor" android:layout_marginTop="5dp" android:paddingLeft="10dp" android:paddingRight="10dp"> <LinearLayout android:layout_width="wrap_content" android:layout_height="wrap_content" android:background="@drawable/bg_radius_bottom_pink" android:gravity="center_vertical" android:paddingLeft="10dp" android:paddingTop="2dp" android:paddingRight="10dp" android:paddingBottom="2dp"> <ImageView android:layout_width="20dp" android:layout_height="10dp" android:src="@drawable/molive_icon_charm_lv_20" /> <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginLeft="5dp" android:text="小时榜单第5名" android:textColor="#fff" android:textSize="10sp" /> </LinearLayout> <TextView android:id="@+id/tv_momocode" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_alignParentRight="true" android:layout_centerVertical="true" android:background="@drawable/bg_radius_top_black" android:paddingLeft="10dp" android:paddingTop="2dp" android:paddingRight="10dp" android:paddingBottom="2dp" android:text="MoMo: 12345678" android:textColor="@android:color/white" android:textSize="10sp" /> </RelativeLayout> <LinearLayout android:id="@+id/ll_gift_group" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_above="@+id/lv_message" android:layout_marginTop="10dp" android:layout_marginBottom="10dp" android:animateLayoutChanges="true" android:gravity="top" android:orientation="vertical" /> <ListView android:id="@+id/lv_message" android:layout_width="230dp" android:layout_height="150dp" android:layout_above="@+id/fl_bottom" android:layout_marginLeft="10dp" android:cacheColorHint="#00000000" android:pider="@null" android:piderHeight="5dp" android:listSelector="#00000000" android:scrollbarStyle="outsideOverlay" android:scrollbars="none" android:transcriptMode="normal" /> <FrameLayout android:id="@+id/fl_bottom" android:layout_width="match_parent" android:layout_height="70dp" android:layout_alignParentStart="true" android:layout_alignParentBottom="true"> <LinearLayout android:layout_width="match_parent" android:layout_height="match_parent" android:background="@android:color/transparent" android:gravity="center_vertical" android:orientation="horizontal" android:paddingLeft="10dp" android:paddingRight="10dp"> <Button android:id="@+id/tv_chat" android:layout_width="40dp" android:layout_height="70dp" android:gravity="center" android:text="聊天" android:textColor="#333" android:textSize="10sp" /> <View android:layout_width="0dp" android:layout_height="1dp" android:layout_weight="1" /> <Button android:id="@+id/btn_gift01" android:layout_width="40dp" android:layout_height="70dp" android:layout_marginRight="5dp" android:gravity="center" android:text="送香皂" android:textColor="#333" android:textSize="12sp" /> <Button android:id="@+id/btn_gift02" android:layout_width="40dp" android:layout_height="70dp" android:layout_marginRight="5dp" android:gravity="center" android:text="送玫瑰" android:textColor="#333" android:textSize="12sp" /> <Button android:id="@+id/btn_gift03" android:layout_width="40dp" android:layout_height="70dp" android:layout_marginRight="5dp" android:gravity="center" android:text="送爱心" android:textColor="#333" android:textSize="12sp" /> <Button android:id="@+id/btn_gift04" android:layout_width="40dp" android:layout_height="70dp" android:layout_marginRight="5dp" android:gravity="center" android:text="送蛋糕" android:textColor="#333" android:textSize="12sp" /> </LinearLayout> <LinearLayout android:id="@+id/ll_inputparent" android:layout_width="match_parent" android:layout_height="match_parent" android:layout_marginTop="5dp" android:background="@android:color/white" android:paddingLeft="10dp" android:paddingRight="10dp" android:visibility="gone"> <LinearLayout android:layout_width="match_parent" android:layout_height="match_parent" android:gravity="center_vertical" android:orientation="horizontal"> <EditText android:id="@+id/et_chat" android:layout_width="0dp" android:layout_height="wrap_content" android:layout_weight="1" android:background="@android:color/white" android:hint="在此输入你要说的话!" android:maxLength="30" android:paddingTop="10dp" android:paddingBottom="10dp" android:textColor="#888889" android:textColorHint="#c8c8c8" android:textSize="12sp" /> <TextView android:id="@+id/tv_send" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginLeft="10dp" android:background="@android:color/holo_blue_bright" android:paddingLeft="10dp" android:paddingTop="5dp" android:paddingRight="10dp" android:paddingBottom="5dp" android:text="发送" android:textColor="@android:color/white" android:textSize="12sp" /> </LinearLayout> </LinearLayout> </FrameLayout></RelativeLayout>

EmptyFrag：

/** * 空的fragment */public class EmptyFrag extends Fragment { @Nullable @Override public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) { return inflater.inflate(R.layout.frag_empty, null); }}

frag_empty.xml：

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent" android:background="@android:color/transparent" android:orientation="vertical"></LinearLayout>

在MainActivity中使用FrameLayout布局，将观众功能交互页面 InteractiveFrag 覆盖在 直播页面LiveFrag上面。

MainActivity:

public class MainActivity extends AppCompatActivity { @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); // 加载直播fragment LiveFrag liveFrag = new LiveFrag(); getSupportFragmentManager().beginTransaction().add(R.id.fl_root, liveFrag).commit(); // 加载 new InteractiveFrag().show(getSupportFragmentManager(), "InteractiveFrag"); }}

activity_main.xml :

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent"> <FrameLayout android:id="@+id/fl_root" android:layout_width="match_parent" android:layout_height="match_parent" /></RelativeLayout>

用户交互页实现

MagicTextView动画效果

MagicTextView代码在文章最后展示。

我们先实现如下动画效果

<com.hongx.zhibo.utils.MagicTextView android:id="@+id/mtv_giftNum" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_centerVertical="true" android:layout_marginLeft="5dp" android:layout_toRightOf="@+id/rlparent" android:includeFontPadding="false" android:text="x1" android:textColor="@android:color/holo_red_dark" android:textSize="30sp" android:textStyle="bold" app:strokeColor="@android:color/white" app:strokeJoinStyle="miter" app:strokeWidth="2" />

动画：

public class NumberAnim { private Animator lastAnimator; public void showAnimator(View v) { if (lastAnimator != null) { lastAnimator.removeAllListeners(); lastAnimator.cancel(); lastAnimator.end(); } ObjectAnimator animScaleX = ObjectAnimator.ofFloat(v, "scaleX", 1.3f, 1.0f); ObjectAnimator animScaleY = ObjectAnimator.ofFloat(v, "scaleY", 1.3f, 1.0f); AnimatorSet animSet = new AnimatorSet(); animSet.playTogether(animScaleX, animScaleY); animSet.setDuration(200); lastAnimator = animSet; animSet.start(); } } mtv_giftNum.setText("x" + count); giftNumberAnim = new NumberAnim(); // 初始化数字动画  mtv_giftNum.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { count++; mtv_giftNum.setText("x" + count); giftNumberAnim.showAnimator(mtv_giftNum); } });

礼物进入时动画

进入动画设置为decelerate_interpolator减速插值器：

<?xml version="1.0" encoding="utf-8"?><translate xmlns:android="http://schemas.android.com/apk/res/android" android:duration="500" android:fromXDelta="-100%p" android:interpolator="@android:anim/decelerate_interpolator" android:toYDelta="0%p"></translate> /** * 刷礼物的方法 */ private void showGift(String tag) { View newGiftView = ll_gift_group.findViewWithTag(tag); // 是否有该tag类型的礼物 if (newGiftView == null) { // 获取礼物 newGiftView = getNewGiftView(tag); ll_gift_group.addView(newGiftView); // 播放动画 newGiftView.startAnimation(inAnim); final MagicTextView mtv_giftNum = newGiftView.findViewById(R.id.mtv_giftNum); inAnim.setAnimationListener(new Animation.AnimationListener() { @Override public void onAnimationStart(Animation animation) { } @Override public void onAnimationRepeat(Animation animation) { } @Override public void onAnimationEnd(Animation animation) { giftNumberAnim.showAnimator(mtv_giftNum); } }); } else { // 如果列表中已经有了该类型的礼物，则不再新建，直接拿出 // 更新标识，记录最新修改的时间，用于回收判断 ImageView iv_gift = newGiftView.findViewById(R.id.iv_gift); iv_gift.setTag(System.currentTimeMillis()); // 更新标识，更新记录礼物个数 MagicTextView mtv_giftNum = newGiftView.findViewById(R.id.mtv_giftNum); int giftCount = (int) mtv_giftNum.getTag() + 1; // 递增 mtv_giftNum.setText("x" + giftCount); mtv_giftNum.setTag(giftCount); giftNumberAnim.showAnimator(mtv_giftNum); } } /** * 获取礼物 */ private View getNewGiftView(String tag) { // 添加标识, 该view若在layout中存在，就不在生成（用于findViewWithTag判断是否存在） View giftView = LayoutInflater.from(myContext).inflate(R.layout.item_gift, null); giftView.setTag(tag); // 添加标识, 记录生成时间，回收时用于判断是否是最新的，回收最老的 ImageView iv_gift = giftView.findViewById(R.id.iv_gift); iv_gift.setTag(System.currentTimeMillis()); // 添加标识，记录礼物个数 MagicTextView mtv_giftNum = giftView.findViewById(R.id.mtv_giftNum); mtv_giftNum.setTag(1); mtv_giftNum.setText("x1"); switch (tag) { case "gift01": iv_gift.setImageResource(GiftIcon[0]); break; case "gift02": iv_gift.setImageResource(GiftIcon[1]); break; case "gift03": iv_gift.setImageResource(GiftIcon[2]); break; case "gift04": iv_gift.setImageResource(GiftIcon[3]); break; } LinearLayout.LayoutParams lp = new LinearLayout.LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.WRAP_CONTENT); lp.topMargin = 10; giftView.setLayoutParams(lp); return giftView; } @Override public void onClick(View v) { switch (v.getId()) { case R.id.btn_gift01: // 礼物1,送香皂 showGift("gift01"); break; case R.id.btn_gift02: // 礼物2,送玫瑰 showGift("gift02"); break; case R.id.btn_gift03: // 礼物3,送爱心 showGift("gift03"); break; case R.id.btn_gift04: // 礼物4,送蛋糕 showGift("gift04"); break; } }

礼物移出动画

实现的效果如下：

礼物移出时使用accelerate_interpolator加速差值器

<?xml version="1.0" encoding="utf-8"?><translate xmlns:android="http://schemas.android.com/apk/res/android" android:duration="500" android:fromYDelta="0%p" android:interpolator="@android:anim/accelerate_interpolator" android:toYDelta="-100%p"></translate> /** * 移除礼物列表里的giftView */ private void removeGiftView(final int index) { // 移除列表，外加退出动画 final View removeGiftView = ll_gift_group.getChildAt(index); outAnim.setAnimationListener(new Animation.AnimationListener() { @Override public void onAnimationStart(Animation animation) { } @Override public void onAnimationRepeat(Animation animation) { } @Override public void onAnimationEnd(Animation animation) { ll_gift_group.removeViewAt(index); } }); // 开启动画，因为定时原因，所以可能是在子线程 getActivity().runOnUiThread(new Runnable() { @Override public void run() { removeGiftView.startAnimation(outAnim); } }); }

如果显示的礼物大于3种，就将最早的那种礼物移除：

// 是否有该tag类型的礼物 if (newGiftView == null) { // 判断礼物列表是否已经有3个了，如果有那么删除掉一个没更新过的, 然后再添加新进来的礼物，始终保持只有3个 if (ll_gift_group.getChildCount() >= 3) { // 获取前2个元素的最后更新时间 View giftView01 = ll_gift_group.getChildAt(0); ImageView iv_gift01 = giftView01.findViewById(R.id.iv_gift); long lastTime1 = (long) iv_gift01.getTag(); View giftView02 = ll_gift_group.getChildAt(1); ImageView iv_gift02 = giftView02.findViewById(R.id.iv_gift); long lastTime2 = (long) iv_gift02.getTag(); if (lastTime1 > lastTime2) { // 如果第二个View显示的时间比较长 removeGiftView(1); } else { // 如果第一个View显示的时间长 removeGiftView(0); } }...

开启定时清理礼物列表

礼物显示超过一定时间，自动将礼物在礼物列表中移除：

/** * 定时清理礼物列表信息 */ private void clearTiming() { Timer timer = new Timer(); timer.schedule(new TimerTask() { @Override public void run() { int childCount = ll_gift_group.getChildCount(); long nowTime = System.currentTimeMillis(); for (int i = 0; i < childCount; i++) { View childView = ll_gift_group.getChildAt(i); ImageView iv_gift = (ImageView) childView.findViewById(R.id.iv_gift); long lastUpdateTime = (long) iv_gift.getTag(); // 更新超过3秒就刷新 if (nowTime - lastUpdateTime >= 3000) { removeGiftView(i); } } } }, 0, 3000); }

聊天实现

case R.id.tv_chat:// 聊天 tv_chat.setVisibility(View.GONE); ll_inputparent.setVisibility(View.VISIBLE); ll_inputparent.requestFocus(); // 获取焦点 showKeyboard(); break; case R.id.tv_send:// 发送消息 String chatMsg = et_chat.getText().toString(); if (!TextUtils.isEmpty(chatMsg)) { messageData.add("小明: " + chatMsg); et_chat.setText(""); messageAdapter.NotifyAdapter(messageData); lv_message.setSelection(messageData.size()); } hideKeyboard(); break; /** * 显示软键盘 */ private void showKeyboard() { InputMethodManager imm = (InputMethodManager) getActivity().getSystemService(Context.INPUT_METHOD_SERVICE); imm.showSoftInput(et_chat, InputMethodManager.SHOW_FORCED); } /** * 隐藏软键盘 */ public void hideKeyboard() { InputMethodManager imm = (InputMethodManager) getActivity().getSystemService(Context.INPUT_METHOD_SERVICE); imm.hideSoftInputFromWindow(et_chat.getWindowToken(), 0); } view.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { if (ll_inputparent.getVisibility() == View.VISIBLE) { tv_chat.setVisibility(View.VISIBLE); ll_inputparent.setVisibility(View.GONE); hideKeyboard(); } } }); // 软键盘监听 SoftKeyBoardListener.setListener(getActivity(), new SoftKeyBoardListener.OnSoftKeyBoardChangeListener() { @Override public void keyBoardShow(int height) {/*软键盘显示：执行隐藏title动画，并修改listview高度和装载礼物容器的高度*/ // 输入文字时的界面退出动画 AnimatorSet animatorSetHide = new AnimatorSet(); ObjectAnimator leftOutAnim = ObjectAnimator.ofFloat(rl_num, "translationX", 0, -rl_num.getWidth()); ObjectAnimator topOutAnim = ObjectAnimator.ofFloat(ll_anchor, "translationY", 0, -ll_anchor.getHeight()); animatorSetHide.playTogether(leftOutAnim, topOutAnim); animatorSetHide.setDuration(300); animatorSetHide.start(); // 改变listview的高度 dynamicChangeListviewH(90); dynamicChangeGiftParentH(true); } @Override public void keyBoardHide(int height) {/*软键盘隐藏：隐藏聊天输入框并显示聊天按钮，执行显示title动画，并修改listview高度和装载礼物容器的高度*/ tv_chat.setVisibility(View.VISIBLE); ll_inputparent.setVisibility(View.GONE); // 输入文字时的界面进入时的动画 AnimatorSet animatorSetShow = new AnimatorSet(); ObjectAnimator leftInAnim = ObjectAnimator.ofFloat(rl_num, "translationX", -rl_num.getWidth(), 0); ObjectAnimator topInAnim = ObjectAnimator.ofFloat(ll_anchor, "translationY", -ll_anchor.getHeight(), 0); animatorSetShow.playTogether(leftInAnim, topInAnim); animatorSetShow.setDuration(300); animatorSetShow.start(); // 改变listview的高度 dynamicChangeListviewH(150); dynamicChangeGiftParentH(false); } }); /** * 动态的修改listview的高度 */ private void dynamicChangeListviewH(int heightPX) { ViewGroup.LayoutParams layoutParams = lv_message.getLayoutParams(); layoutParams.height = DisplayUtil.dip2px(getActivity(), heightPX); lv_message.setLayoutParams(layoutParams); } /** * 动态修改礼物父布局的高度 */ private void dynamicChangeGiftParentH(boolean showhide) { if (showhide) {// 如果软键盘显示中 if (ll_gift_group.getChildCount() != 0) { // 判断是否有礼物显示，如果有就修改父布局高度，如果没有就不作任何操作 ViewGroup.LayoutParams layoutParams = ll_gift_group.getLayoutParams(); layoutParams.height = ll_gift_group.getChildAt(0).getHeight(); ll_gift_group.setLayoutParams(layoutParams); } } else { // 如果软键盘隐藏中 // 就将装载礼物的容器的高度设置为包裹内容 ViewGroup.LayoutParams layoutParams = ll_gift_group.getLayoutParams(); layoutParams.height = ViewGroup.LayoutParams.WRAP_CONTENT; ll_gift_group.setLayoutParams(layoutParams); } }

MagicTextView代码

/** * 该自定义view是用于显示礼物数字的,加了些效果，内发光，阴影等 */public class MagicTextView extends TextView { private ArrayList<Shadow> outerShadows; private ArrayList<Shadow> innerShadows; private WeakHashMap<String, Pair<Canvas, Bitmap>> canvasStore; private Canvas tempCanvas; private Bitmap tempBitmap; private Drawable foregroundDrawable; private float strokeWidth; private Integer strokeColor; private Join strokeJoin; private float strokeMiter; private int[] lockedCompoundPadding; private boolean frozen = false; public MagicTextView(Context context) { super(context); init(null); } public MagicTextView(Context context, AttributeSet attrs) { super(context, attrs); init(attrs); } public MagicTextView(Context context, AttributeSet attrs, int defStyle) { super(context, attrs, defStyle); init(attrs); } public void init(AttributeSet attrs) { outerShadows = new ArrayList<Shadow>(); innerShadows = new ArrayList<Shadow>(); if (canvasStore == null) { canvasStore = new WeakHashMap<String, Pair<Canvas, Bitmap>>(); } if (attrs != null) { TypedArray a = getContext().obtainStyledAttributes(attrs, R.styleable.MagicTextView); String typefaceName = a.getString(R.styleable.MagicTextView_typeface); if (typefaceName != null) { Typeface tf = Typeface.createFromAsset(getContext().getAssets(), String.format("fonts/%s.ttf", typefaceName)); setTypeface(tf); } if (a.hasValue(R.styleable.MagicTextView_foreground)) { Drawable foreground = a.getDrawable(R.styleable.MagicTextView_foreground); if (foreground != null) { this.setForegroundDrawable(foreground); } else { this.setTextColor(a.getColor(R.styleable.MagicTextView_foreground, 0xff000000)); } } if (a.hasValue(R.styleable.MagicTextView_innerShadowColor)) { this.addInnerShadow(a.getFloat(R.styleable.MagicTextView_innerShadowRadius, 0), a.getFloat(R.styleable.MagicTextView_innerShadowDx, 0), a.getFloat(R.styleable.MagicTextView_innerShadowDy, 0), a.getColor(R.styleable.MagicTextView_innerShadowColor, 0xff000000)); } if (a.hasValue(R.styleable.MagicTextView_outerShadowColor)) { this.addOuterShadow(a.getFloat(R.styleable.MagicTextView_outerShadowRadius, 0), a.getFloat(R.styleable.MagicTextView_outerShadowDx, 0), a.getFloat(R.styleable.MagicTextView_outerShadowDy, 0), a.getColor(R.styleable.MagicTextView_outerShadowColor, 0xff000000)); } if (a.hasValue(R.styleable.MagicTextView_strokeColor)) { float strokeWidth = a.getFloat(R.styleable.MagicTextView_strokeWidth, 1); int strokeColor = a.getColor(R.styleable.MagicTextView_strokeColor, 0xff000000); float strokeMiter = a.getFloat(R.styleable.MagicTextView_strokeMiter, 10); Join strokeJoin = null; switch (a.getInt(R.styleable.MagicTextView_strokeJoinStyle, 0)) { case (0): strokeJoin = Join.MITER; break; case (1): strokeJoin = Join.BEVEL; break; case (2): strokeJoin = Join.ROUND; break; } this.setStroke(strokeWidth, strokeColor, strokeJoin, strokeMiter); } } } public void setStroke(float width, int color, Join join, float miter) { strokeWidth = width; strokeColor = color; strokeJoin = join; strokeMiter = miter; } public void setStroke(float width, int color) { setStroke(width, color, Join.MITER, 10); } public void addOuterShadow(float r, float dx, float dy, int color) { if (r == 0) { r = 0.0001f; } outerShadows.add(new Shadow(r, dx, dy, color)); } public void addInnerShadow(float r, float dx, float dy, int color) { if (r == 0) { r = 0.0001f; } innerShadows.add(new Shadow(r, dx, dy, color)); } public void clearInnerShadows() { innerShadows.clear(); } public void clearOuterShadows() { outerShadows.clear(); } public void setForegroundDrawable(Drawable d) { this.foregroundDrawable = d; } public Drawable getForeground() { return this.foregroundDrawable == null ? this.foregroundDrawable : new ColorDrawable(this.getCurrentTextColor()); } @Override public void onDraw(Canvas canvas) { super.onDraw(canvas); freeze(); Drawable restoreBackground = this.getBackground(); Drawable[] restoreDrawables = this.getCompoundDrawables(); int restoreColor = this.getCurrentTextColor(); this.setCompoundDrawables(null, null, null, null); for (Shadow shadow : outerShadows) { this.setShadowLayer(shadow.r, shadow.dx, shadow.dy, shadow.color); super.onDraw(canvas); } this.setShadowLayer(0, 0, 0, 0); this.setTextColor(restoreColor); if (this.foregroundDrawable != null && this.foregroundDrawable instanceof BitmapDrawable) { generateTempCanvas(); super.onDraw(tempCanvas); Paint paint = ((BitmapDrawable) this.foregroundDrawable).getPaint(); paint.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.SRC_ATOP)); this.foregroundDrawable.setBounds(canvas.getClipBounds()); this.foregroundDrawable.draw(tempCanvas); canvas.drawBitmap(tempBitmap, 0, 0, null); tempCanvas.drawColor(Color.TRANSPARENT, PorterDuff.Mode.CLEAR); } if (strokeColor != null) { TextPaint paint = this.getPaint();// paint.setTextAlign(Paint.Align.CENTER); paint.setStyle(Style.STROKE); paint.setStrokeJoin(strokeJoin); paint.setStrokeMiter(strokeMiter); this.setTextColor(strokeColor); paint.setStrokeWidth(strokeWidth); super.onDraw(canvas); paint.setStyle(Style.FILL); this.setTextColor(restoreColor); } if (innerShadows.size() > 0) { generateTempCanvas(); TextPaint paint = this.getPaint(); for (Shadow shadow : innerShadows) { this.setTextColor(shadow.color); super.onDraw(tempCanvas); this.setTextColor(0xFF000000); paint.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.DST_OUT)); paint.setMaskFilter(new BlurMaskFilter(shadow.r, BlurMaskFilter.Blur.NORMAL)); tempCanvas.save(); tempCanvas.translate(shadow.dx, shadow.dy); super.onDraw(tempCanvas); tempCanvas.restore(); canvas.drawBitmap(tempBitmap, 0, 0, null); tempCanvas.drawColor(Color.TRANSPARENT, PorterDuff.Mode.CLEAR); paint.setXfermode(null); paint.setMaskFilter(null); this.setTextColor(restoreColor); this.setShadowLayer(0, 0, 0, 0); } } if (restoreDrawables != null) { this.setCompoundDrawablesWithIntrinsicBounds(restoreDrawables[0], restoreDrawables[1], restoreDrawables[2], restoreDrawables[3]); } this.setBackgroundDrawable(restoreBackground); this.setTextColor(restoreColor); unfreeze(); } private void generateTempCanvas() { String key = String.format("%dx%d", getWidth(), getHeight()); Pair<Canvas, Bitmap> stored = canvasStore.get(key); if (stored != null) { tempCanvas = stored.first; tempBitmap = stored.second; } else { tempCanvas = new Canvas(); tempBitmap = Bitmap.createBitmap(getWidth(), getHeight(), Bitmap.Config.ARGB_8888); tempCanvas.setBitmap(tempBitmap); canvasStore.put(key, new Pair<Canvas, Bitmap>(tempCanvas, tempBitmap)); } } public void freeze() { lockedCompoundPadding = new int[]{ getCompoundPaddingLeft(), getCompoundPaddingRight(), getCompoundPaddingTop(), getCompoundPaddingBottom() }; frozen = true; } public void unfreeze() { frozen = false; } @Override public void requestLayout() { if (!frozen) super.requestLayout(); } @Override public void postInvalidate() { if (!frozen) super.postInvalidate(); } @Override public void postInvalidate(int left, int top, int right, int bottom) { if (!frozen) super.postInvalidate(left, top, right, bottom); } @Override public void invalidate() { if (!frozen) super.invalidate(); } @Override public void invalidate(Rect rect) { if (!frozen) super.invalidate(rect); } @Override public void invalidate(int l, int t, int r, int b) { if (!frozen) super.invalidate(l, t, r, b); } @Override public int getCompoundPaddingLeft() { return !frozen ? super.getCompoundPaddingLeft() : lockedCompoundPadding[0]; } @Override public int getCompoundPaddingRight() { return !frozen ? super.getCompoundPaddingRight() : lockedCompoundPadding[1]; } @Override public int getCompoundPaddingTop() { return !frozen ? super.getCompoundPaddingTop() : lockedCompoundPadding[2]; } @Override public int getCompoundPaddingBottom() { return !frozen ? super.getCompoundPaddingBottom() : lockedCompoundPadding[3]; } public static class Shadow { float r; float dx; float dy; int color; public Shadow(float r, float dx, float dy, int color) { this.r = r; this.dx = dx; this.dy = dy; this.color = color; } }}

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