修复 Toast 没有跟随 Activity 生命周期的问题

Author: getActivity

README.md

@@ -1,8 +1,10 @@
 # 吐司工具类
 
+> 码云地址：[Gitee](https://gitee.com/getActivity/ToastUtils)
+
 > 博客地址：[只需体验三分钟，你就会跟我一样，爱上这款Toast](https://www.jianshu.com/p/9b174ee2c571)
 
-> 已投入公司项目多时，没有任何毛病，可胜任任何需求，[点击此处下载Demo](https://raw.githubusercontent.com/getActivity/ToastUtils/master/ToastUtils.apk)
+> 已投入公司项目多时，没有任何毛病，可胜任任何需求，[点击此处下载Demo](ToastUtils.apk)
 
 > 想了解实现原理的可以点击此链接查看：[ToastUtils](https://github.com/getActivity/ToastUtils/blob/master/library/src/main/java/com/hjq/toast/ToastUtils.java) 源码
 
@@ -13,7 +15,7 @@
 #### 集成步骤
 
     dependencies {
-        implementation 'com.hjq:toast:8.2'
+        implementation 'com.hjq:toast:8.3'
     }
 
 #### 初始化 Toast

ToastUtils.apk

@@ -7,8 +7,8 @@ android {
         applicationId "com.hjq.toast.demo"
         minSdkVersion 14
         targetSdkVersion 28
-        versionCode 82
-        versionName "8.2"
+        versionCode 83
+        versionName "8.3"
         testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
     }
     buildTypes {
@@ -26,7 +26,7 @@ dependencies {
     // 标题栏：https://github.com/getActivity/TitleBar
     implementation 'com.hjq:titlebar:6.0'
     // 悬浮窗：https://github.com/getActivity/XToast
-    implementation 'com.hjq:xtoast:5.0'
+    implementation 'com.hjq:xtoast:5.5'
     // 内存泄漏捕捉：https://github.com/square/leakcanary
-    debugImplementation 'com.squareup.leakcanary:leakcanary-android:2.2'
+    debugImplementation 'com.squareup.leakcanary:leakcanary-android:2.4'
 }

app/build.gradle

@@ -27,7 +27,7 @@ public boolean intercept(Toast toast, CharSequence text) {
                 if (intercept) {
                     Log.e("Toast", "空 Toast");
                 } else {
-                    Log.i("Toast", text.toString());
+                    Log.d("Toast", text.toString());
                 }
                 return intercept;
             }

app/src/main/java/com/hjq/toast/demo/ToastApplication.java

@@ -7,16 +7,16 @@ android {
     defaultConfig {
         minSdkVersion 3
         targetSdkVersion 26
-        versionCode 82
-        versionName "8.2"
+        versionCode 83
+        versionName "8.3"
     }
 }
 
 publish {
     userOrg = 'getactivity'
     groupId = 'com.hjq'
     artifactId = 'toast'
-    version = '8.2'
+    version = '8.3'
     description = 'This is a very functional Toast'
     website = "https://github.com/getActivity/ToastUtils"
 }

library/build.gradle

@@ -1,6 +1,8 @@
 package com.hjq.toast;
 
+import android.app.Activity;
 import android.app.Application;
+import android.content.Context;
 import android.graphics.PixelFormat;
 import android.os.Handler;
 import android.os.Looper;
@@ -95,16 +97,24 @@ void show() {
             params.y = mToast.getYOffset();
 
             try {
-                // 如果这个 View 对象被重复添加到 WindowManager 则会抛出异常
-                // java.lang.IllegalStateException:
-                // View android.widget.TextView has already been added to the window manager.
-                mWindowHelper.getWindowManager().addView(mToast.getView(), params);
+                Activity topActivity = mWindowHelper.getTopActivity();
+                if (topActivity != null && !topActivity.isFinishing()) {
+                    WindowManager windowManager = (WindowManager) topActivity.getSystemService(Context.WINDOW_SERVICE);
+                    if (windowManager != null) {
+                        windowManager.addView(mToast.getView(), params);
+                    }
+                }
                 // 添加一个移除吐司的任务
                 sendEmptyMessageDelayed(hashCode(), mToast.getDuration() == Toast.LENGTH_LONG ?
                         IToastStrategy.LONG_DURATION_TIMEOUT : IToastStrategy.SHORT_DURATION_TIMEOUT);
                 // 当前已经显示
                 setShow(true);
-            } catch (NullPointerException | IllegalStateException | WindowManager.BadTokenException ignored) {}
+            } catch (IllegalStateException | WindowManager.BadTokenException ignored) {
+                // 如果这个 View 对象被重复添加到 WindowManager 则会抛出异常
+                // java.lang.IllegalStateException: View android.widget.TextView has already been added to the window manager.
+                // 如果 WindowManager 绑定的 Activity 已经销毁，则会抛出异常
+                // android.view.WindowManager$BadTokenException: Unable to add window -- token android.os.BinderProxy@ef1ccb6 is not valid; is your activity running?
+            }
         }
     }
 
@@ -116,11 +126,17 @@ void cancel() {
         removeMessages(hashCode());
         if (isShow()) {
             try {
+                Activity topActivity = mWindowHelper.getTopActivity();
+                if (topActivity != null) {
+                    WindowManager windowManager = (WindowManager) topActivity.getSystemService(Context.WINDOW_SERVICE);
+                    if (windowManager != null) {
+                        windowManager.removeViewImmediate(mToast.getView());
+                    }
+                 }
+            } catch (IllegalArgumentException ignored) {
                 // 如果当前 WindowManager 没有附加这个 View 则会抛出异常
-                // java.lang.IllegalArgumentException:
-                // View=android.widget.TextView not attached to window manager
-                mWindowHelper.getWindowManager().removeViewImmediate(mToast.getView());
-            } catch (NullPointerException | IllegalArgumentException ignored) {}
+                // java.lang.IllegalArgumentException: View=android.widget.TextView not attached to window manager
+            }
             // 当前没有显示
             setShow(false);
         }

library/src/main/java/com/hjq/toast/ToastHelper.java

@@ -3,10 +3,8 @@
 import android.annotation.TargetApi;
 import android.app.Activity;
 import android.app.Application;
-import android.content.Context;
 import android.os.Build;
 import android.os.Bundle;
-import android.view.WindowManager;
 
 /**
  *    author : Android 轮子哥
@@ -34,19 +32,10 @@ static WindowHelper register(ToastHelper toast, Application application) {
     }
 
     /**
-     * 获取一个WindowManager对象
-     *
-     * @return          如果获取不到则抛出空指针异常
+     * 获取栈顶的 Activity
      */
-    WindowManager getWindowManager() throws NullPointerException {
-        // 如果使用的 WindowManager 对象不是当前 Activity 创建的，则会抛出异常
-        // android.view.WindowManager$BadTokenException: Unable to add window -- token null is not for an application
-        // 如果使用的 WindowManager 对象的 Activity 已经销毁，则会抛出异常
-        // WindowManager: android.view.WindowLeaked: Activity has leaked window TextView that was originally added here
-        if (mTopActivity != null && !mTopActivity.isFinishing()) {
-            return ((WindowManager) mTopActivity.getSystemService(Context.WINDOW_SERVICE));
-        }
-        throw new NullPointerException();
+    Activity getTopActivity() {
+        return mTopActivity;
     }
 
     /**