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基于 EasyFloat 实现应用内全局悬浮窗

基于 EasyFloat 实现应用内全局悬浮窗

作者: zty5678 | 来源:发表于2021-02-17 01:29 被阅读0次

    由于项目需求,需要实现一个应用内悬浮窗功能,要求是:

    • 点击悬浮窗图标可以跳转到一个固定的Activity A;
    • 用户在app内的任一activity里都能看到悬浮窗(除了Activity A)
    • 悬浮窗可以关闭,可以拖动,拖动过程中松手可以自动吸附到屏幕边缘。

    经过搜索,我发现了一个第三方库EasyFloat(https://github.com/princekin-f/EasyFloat),功能相当强大。

    EasyFloat_intro.png

    EasyFloat支持四种悬浮窗:

    类型 特点 是否需要悬浮窗权限
    CURRENT_ACTIVITY 只在当前Activity显示
    FOREGROUND 仅应用前台时显示
    BACKGROUND 仅应用后台时显示
    ALL_TIME 一直显示(不分前后台)

    那么问题来了,我要实现的功能是应用内的悬浮窗,回到桌面后没必要继续显示悬浮窗。所以我并不想申请悬浮窗权限。何况由于不同安卓手机系统的限制,悬浮窗权限没有一个统一的申请方式,需要针对不同手机系统做单独适配,测试起来也麻烦。

    既然CURRENT_ACTIVITY不需要权限,那么有没有办法通过CURRENT_ACTIVITY 来实现应用内全局悬浮窗呢?

    思路:

    1. 每打开一个activity,就创建一个CURRENT_ACTIVITY类型的悬浮窗,如果创建的速度足够快,用户会以为所有界面的悬浮窗都是同一个;
    2. 拖动悬浮窗后,记录下它的坐标。当跳转到别的activity时,将新创建的悬浮窗的位置设置成已保存的坐标。

    经过测试,这个方案完全可行。以下是实现步骤:

    1. 实现悬浮窗界面:

    App.java:

    
    public class App extends Application {
        @Override
        public void onCreate() {
            super.onCreate();
            EasyFloat.init(this, true);
    
            registerActivityLifecycleCallbacks(new ActivityLifecycleCallbacks() {
                @Override
                public void onActivityCreated(@NonNull Activity activity, @Nullable Bundle savedInstanceState) {
                }
                @Override
                public void onActivityStarted(@NonNull Activity activity) {
                }
                @Override
                public void onActivityResumed(@NonNull Activity activity) {
                    doOnActivityResume(activity);
                }
                @Override
                public void onActivityPaused(@NonNull Activity activity) {
                }
                @Override
                public void onActivityStopped(@NonNull Activity activity) {
                    doOnActivityStopped(activity);
                }
                @Override
                public void onActivitySaveInstanceState(@NonNull Activity activity, @NonNull Bundle outState) {
                }
                @Override
                public void onActivityDestroyed(@NonNull Activity activity) {
                }
            });
        }
    
        private static final String TAG_FLOAT_VIEW = "TAG_FLOAT_VIEW";
    
        private void doOnActivityResume(Activity activity) {
            EasyFloat.Builder builder = EasyFloat.with(activity)
                    .setLayout(R.layout.layout_float_window)
                    .setShowPattern(ShowPattern.CURRENT_ACTIVITY) 
                    .setAnimator(null) /*关闭动画*/
                    .setSidePattern(SidePattern.RESULT_HORIZONTAL) /*吸附效果*/
                    .setTag(TAG_FLOAT_VIEW);
    
            builder.setGravity(Gravity.RIGHT | Gravity.CENTER_VERTICAL);
            builder.show();
        }
        private void doOnActivityStopped(Activity activity) {
            EasyFloat.dismiss(activity, TAG_FLOAT_VIEW);//关闭前一个界面的悬浮窗
        }
    
    }
    
    

    layout_float_window.xml:

    <?xml version="1.0" encoding="utf-8"?>
    <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:background="@drawable/bg_float_view">
    
        <TextView
            android:id="@+id/click_view_float"
            android:layout_width="100dp"
            android:layout_height="100dp"
            android:background="?attr/selectableItemBackgroundBorderless"
            android:clickable="true"
            android:gravity="center"
            android:text="点我"
            android:textColor="#fff"
            android:textSize="24sp">
    
        </TextView>
    
        <ImageView
            android:id="@+id/click_view_close"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_alignRight="@id/click_view_float"
            android:layout_alignParentTop="true"
            android:background="?attr/selectableItemBackgroundBorderless"
            android:clickable="true"
            android:padding="3dp"
            android:src="@drawable/ic_close_circle">
    
        </ImageView>
    
    </RelativeLayout>
    

    实现效果:


    效果1

    期间遇到一个编译错误:


    easyfloat的dismiss方法找不到

    查询资料得知,这是由于EasyFloat是kotlin实现的,而我的工程是java开发的,根据 https://www.cnblogs.com/yubo0522/p/11534474.html, 加上kotlin相关支持即可。

    2. 实现点击事件

        private static final String TAG_FLOAT_VIEW = "TAG_FLOAT_VIEW";
    
        private void doOnActivityResume(Activity activity) {
            //客服界面不弹出悬浮窗
            if (activity instanceof CustomerServiceActivity){
                return;
            }
            EasyFloat.Builder builder = EasyFloat.with(activity)
                    .setLayout(R.layout.layout_float_window, new OnInvokeView() {
                        @Override
                        public void invoke(View view) {
                            View click_view_float = view.findViewById(R.id.click_view_float);
                            View click_view_close = view.findViewById(R.id.click_view_close);
                            click_view_float.setOnClickListener(new View.OnClickListener() {
                                @Override
                                public void onClick(View v) {
                                    CustomerServiceActivity.start(view.getContext());
                                }
                            });
                            click_view_close.setOnClickListener(new View.OnClickListener() {
                                @Override
                                public void onClick(View v) {
                                    dismissFloatView(activity);
                                }
                            });
                        }
                    })
                    .setShowPattern(ShowPattern.CURRENT_ACTIVITY)
                    .setAnimator(null)
                    .setSidePattern(SidePattern.RESULT_HORIZONTAL)
                    .setTag(TAG_FLOAT_VIEW);
    
            builder.setGravity(Gravity.RIGHT | Gravity.CENTER_VERTICAL);
            builder.show();
        }
    
        private void dismissFloatView(Activity activity) {
            EasyFloat.dismiss(activity, TAG_FLOAT_VIEW);
        }
    
        private void doOnActivityStopped(Activity activity) {
            dismissFloatView(activity);
        }
    

    效果图:

    添加点击事件-效果图

    3. 拖动后记录位置

    App.java:

    public class App extends Application {
        @Override
        public void onCreate() {
            super.onCreate();
            EasyFloat.init(this, true);
    
            registerActivityLifecycleCallbacks(new ActivityLifecycleCallbacks() {
                @Override
                public void onActivityCreated(@NonNull Activity activity, @Nullable Bundle savedInstanceState) {
                }
                @Override
                public void onActivityStarted(@NonNull Activity activity) {
                }
                @Override
                public void onActivityResumed(@NonNull Activity activity) {
                    doOnActivityResume(activity);
                }
                @Override
                public void onActivityPaused(@NonNull Activity activity) {
                }
                @Override
                public void onActivityStopped(@NonNull Activity activity) {
                    doOnActivityStopped(activity);
                }
                @Override
                public void onActivitySaveInstanceState(@NonNull Activity activity, @NonNull Bundle outState) {
                }
                @Override
                public void onActivityDestroyed(@NonNull Activity activity) {
                }
            });
        }
    
        private static final String TAG_FLOAT_VIEW = "TAG_FLOAT_VIEW";
        private static int floatXOffset;
        private static int floatYOffset;
        private static boolean hasDragged = false;
        private void doOnActivityResume(Activity activity) {
            //客服界面不弹出悬浮窗
            if (activity instanceof CustomerServiceActivity) {
                return;
            }
            EasyFloat.Builder builder = EasyFloat.with(activity)
                    .setLayout(R.layout.layout_float_window, new OnInvokeView() {
                        @Override
                        public void invoke(View view) {
                            View click_view_float = view.findViewById(R.id.click_view_float);
                            View click_view_close = view.findViewById(R.id.click_view_close);
                            click_view_float.setOnClickListener(new View.OnClickListener() {
                                @Override
                                public void onClick(View v) {
                                    CustomerServiceActivity.start(view.getContext());
                                }
                            });
                            click_view_close.setOnClickListener(new View.OnClickListener() {
                                @Override
                                public void onClick(View v) {
                                    dismissFloatView(activity);
                                }
                            });
                        }
                    })
                    .setShowPattern(ShowPattern.CURRENT_ACTIVITY)
                    .setAnimator(null)
                    .setSidePattern(SidePattern.RESULT_HORIZONTAL)
                    .setTag(TAG_FLOAT_VIEW);
    
            if (!hasDragged) {
                builder.setGravity(Gravity.RIGHT | Gravity.CENTER_VERTICAL);
            } else {
                builder.setLocation(floatXOffset, floatYOffset);
            }
    
            builder.registerCallbacks(new OnFloatCallbacks() {
                @Override
                public void createdResult(boolean b, @org.jetbrains.annotations.Nullable String s, @org.jetbrains.annotations.Nullable View view) {
                }
                @Override
                public void show(@NotNull View view) {
                }
                @Override
                public void hide(@NotNull View view) {
                }
                @Override
                public void dismiss() {
                }
                @Override
                public void touchEvent(@NotNull View view, @NotNull MotionEvent motionEvent) {
                }
                @Override
                public void drag(@NotNull View view, @NotNull MotionEvent motionEvent) {
                }
                @Override
                public void dragEnd(@NotNull View view) {
                    //拖动结束
                    hasDragged = true;
                    saveFloatViewPosition(activity);
                }
            });
    
            builder.show();
        }
        
        private void saveFloatViewPosition(Activity activity) {
            View floatView = EasyFloat.getFloatView(activity, TAG_FLOAT_VIEW);
            if (floatView != null) {
                //获取悬浮窗的位置
                int[] outLocation = new int[2];
                floatView.getLocationInWindow(outLocation);
                floatXOffset = outLocation[0];
                floatYOffset = outLocation[1] - Utils.getToolbarHeight(floatView.getContext()) - Utils.getStatusBarHeight(activity);
            }
        }
    
        private void dismissFloatView(Activity activity) {
            EasyFloat.dismiss(activity, TAG_FLOAT_VIEW);
        }
    
        private void doOnActivityStopped(Activity activity) {
            dismissFloatView(activity);
        }
    
    }
    
    

    Utils.java:

    public class Utils {
        public static int getStatusBarHeight(Context context) {
            int result = 0;
            int resourceId = context.getResources().getIdentifier("status_bar_height", "dimen", "android");
            if (resourceId > 0) {
                result = context.getResources().getDimensionPixelSize(resourceId);
            }
            return result;
        }
    
    
        public static int getToolbarHeight(Context context) {
    
            TypedValue tv = new TypedValue();
            if (context.getTheme().resolveAttribute(android.R.attr.actionBarSize, tv, true)) {
                int height = TypedValue.complexToDimensionPixelSize(tv.data, context.getResources().getDisplayMetrics());
                return height;
            }
            return 0;
        }
    
    }
    
    

    最终实现效果:

    记录悬浮窗的位置-效果图

    完整源码地址: https://github.com/zty5678/InAppFloatViewDemo

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