Intent or ainfo is null
Nettet24. jan. 2024 · Intent intent = new Intent(MainActivity.this, SecondActivity.class); startActivity(intent); Log.e("zxy","the component is:::" + intent.getComponent()); //2024-01-17 14:08:34.780 10345-10345/com.example.activitylifecycle E/zxy: the component is:::ComponentInfo … Nettet前文 Android系统揭秘(一)-Activity启动流程(上) Android系统揭秘(一)-Activity启动流程(上) Android系统揭秘(二)-Service启动流程 Android系
Intent or ainfo is null
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Nettet3. jul. 2016 · getIntent returning null. In android when I try to use the getIntent (); method in android, it returns null,which is causing the application to crash. Here is my code : … Nettet15. jan. 2015 · 1、通过class跳转 Intent intent = new Intent (); // (当前Activity,目标Activity) intent.setClass (MainActivity. this, TestActivity.class); startActivity (intent); 2、通过Activity的name跳转,其实与1相同 try { Intent intent = new Intent (); // (当前Activity,目标Activity) intent.setClass (MainActivity. this, Class.forName ( …
NettetActivityInfo aInfo = r.activityInfo; if (r.packageInfo == null) { r.packageInfo = getPackageInfo(aInfo.applicationInfo, r.compatInfo, Context.CONTEXT_INCLUDE_CODE); } ComponentName component = r.intent.getComponent(); if (component == null) { component = r.intent.resolveActivity( … NettetaInfo. sharedLibraryInfos, aInfo, outSeenPaths, outLibPaths); // ApplicationInfo.sharedLibraryFiles is a public API, so anyone can change it. // We prepend shared libraries that the package manager hasn't seen, maintaining their
Nettet17. mar. 2024 · 安卓存储权限原理. 上篇博客介绍了FileProvider是如何跨应用访问文件的。 这篇博客我们来讲讲安卓是如何控制文件的访问权限的。 内部储存. 由于安卓基于Linux,所以最简单的文件访问权限控制方法就是使用Linux的文件权限机制.例如应用的私有目录就是 … Nettet2. mar. 2024 · void startHomeActivity(Intent intent, ActivityInfo aInfo, String reason, TaskDisplayArea taskDisplayArea) { final ActivityOptions options = ActivityOptions.makeBasic(); options.setLaunchWindowingMode(WINDOWING_MODE_FULLSCREEN); if …
Nettet18. feb. 2016 · 因此报错 intent的参数是null的原因是这个intent参数是通过startService (Intent)方法所传递过来的,但是如果Service在你的进程退出后有可能被 系统 自动重启,这个时候intent就会是null. 【解决方法】 【方法一】在使用intent前需要判断一下是否为空。 即: ? 1 2 3 4 boolean groundAlarmFlag = false ; if (intent!= null ) { …
Nettet8. jun. 2024 · if (aInfo != null) { // 获取此包使用的某些权限是否需要用户审核才能运行任何应用程序组件。 if (mService.getPackageManagerInternalLocked().isPermissionsReviewRequired( aInfo.packageName, userId)) { .... // 启动权限审核 Intent newIntent = new … allama iqbal persian poetryNettet10. feb. 2024 · If you still want to start the activity using the class, you will have to call setAction on the Intent. Intent intent = new Intent (Cover.this,MainActivity.class); … allama iqbal role in pakistan movementNettet7. mai 2024 · intent.getAction () is null inside onNewIntent () during NFC tag scan. This is my first time working with NFC Tags. I have declared the NFC scan activity like this in … allama iqbal open university student profileNettet23. mar. 2024 · 首先通过mSupervisor.moveHomeStackTaskToTop ()方法把Launcher的堆栈移到顶部,这也是为什么Launcher总是在所有APP的顶部的原因。. 然后接着调用startActivityLocked ()继续启动Home Activity。. startActivityLocked ()是Android系统启动所有Activity的入口,本文就不再阐述Activity的启动过程了。. allama iqbal poetry in urdu 2 linesNettet6. mar. 2024 · java.lang.SecurityException:Permission Deninal. 最近发的版本线上突然多了好多支付报错的异常。. 这只是其中一部分,2天时间影响大概30-40个用户。. 但是看错误的回调栈很奇怪。. 光看回调栈,基本就知道了被start的Activity的清单文件Manifest的exported属性肯定设置了false ... allama iqbal real photoNettet11. apr. 2024 · 其他进程就可以通过名字检索到ActivityManagerService,而ActivityManagerService本身继承了Binder,从而用于实现跨进程通信。. 在三种类型的服务中启动了很多很多具体的服务,在启动这些服务之后,通过ActivityManagerService的systemReady,表示SystemServer进程准备好了,此时可以 ... allama iqbal special education centre lahoreNettet总结:. 整个 startService 过程,从进程的角度看 Service 的启动流程. proccessA 进程采用 Binder 形式向 system_server 进程发起 startService 请求. system_server 进程收到请求 … allama iqbal open university result 2021 fa