起因

最近从错误日志中检查到一个异常崩溃：

java.lang.RuntimeException: Package manager has died

at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:3151)

at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3261)

at android.app.ActivityThread.access$1000(ActivityThread.java:219)

at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1735)

at android.os.Handler.dispatchMessage(Handler.java:102)

at android.os.Looper.loop(Looper.java:145)

at android.app.ActivityThread.main(ActivityThread.java:6939)

at java.lang.reflect.Method.invoke(Native Method)

at java.lang.reflect.Method.invoke(Method.java:372)

at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1404)

at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1199)

Caused by: java.lang.RuntimeException: Package manager has died

at android.app.ApplicationPackageManager.getPackageInfo(ApplicationPackageManager.java:167)

at com.umeng.socialize.utils.DeviceConfig.isAppInstalled(DeviceConfig.java:46)

at com.umeng.socialize.sso.UMTencentSsoHandler.isClientInstalled(UMTencentSsoHandler.java:456)

at com.haodf.android.posttreatment.doctorhonnrreflect.fragment.UmengShareUtil.shareContentToQQZone(UmengShareUtil.java:220)

at com.haodf.android.basic.home.extension.AdDetailActivity.init(AdDetailActivity.java:74)

at com.haodf.android.base.activity.AbsBaseActivity.onCreate(AbsBaseActivity.java:116)

at android.app.Activity.performCreate(Activity.java:6609)

at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1134)

at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:3104)

... 10 more

Caused by: android.os.TransactionTooLargeException

at android.os.BinderProxy.transactNative(Native Method)

at android.os.BinderProxy.transact(Binder.java:496)

at android.content.pm.IPackageManager$Stub$Proxy.getPackageInfo(IPackageManager.java:2222)

at android.app.ApplicationPackageManager.getPackageInfo(ApplicationPackageManager.java:162)

... 18 more

java.lang.RuntimeException: Package manager has died

at android.app.ApplicationPackageManager.getPackageInfo(ApplicationPackageManager.java:167)

at com.umeng.socialize.utils.DeviceConfig.isAppInstalled(DeviceConfig.java:46)

at com.umeng.socialize.sso.UMTencentSsoHandler.isClientInstalled(UMTencentSsoHandler.java:456)

at com.haodf.android.posttreatment.doctorhonnrreflect.fragment.UmengShareUtil.shareContentToQQZone(UmengShareUtil.java:220)

at com.haodf.android.basic.home.extension.AdDetailActivity.init(AdDetailActivity.java:74)

at com.haodf.android.base.activity.AbsBaseActivity.onCreate(AbsBaseActivity.java:116)

at android.app.Activity.performCreate(Activity.java:6609)

at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1134)

at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:3104)

at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3261)

at android.app.ActivityThread.access$1000(ActivityThread.java:219)

at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1735)

at android.os.Handler.dispatchMessage(Handler.java:102)

at android.os.Looper.loop(Looper.java:145)

at android.app.ActivityThread.main(ActivityThread.java:6939)

at java.lang.reflect.Method.invoke(Native Method)

at java.lang.reflect.Method.invoke(Method.java:372)

at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1404)

at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1199)

Caused by: android.os.TransactionTooLargeException

at android.os.BinderProxy.transactNative(Native Method)

at android.os.BinderProxy.transact(Binder.java:496)

at android.content.pm.IPackageManager$Stub$Proxy.getPackageInfo(IPackageManager.java:2222)

at android.app.ApplicationPackageManager.getPackageInfo(ApplicationPackageManager.java:162)

... 18 more

android.os.TransactionTooLargeException

at android.os.BinderProxy.transactNative(Native Method)

at android.os.BinderProxy.transact(Binder.java:496)

at android.content.pm.IPackageManager$Stub$Proxy.getPackageInfo(IPackageManager.java:2222)

at android.app.ApplicationPackageManager.getPackageInfo(ApplicationPackageManager.java:162)

at com.umeng.socialize.utils.DeviceConfig.isAppInstalled(DeviceConfig.java:46)

at com.umeng.socialize.sso.UMTencentSsoHandler.isClientInstalled(UMTencentSsoHandler.java:456)

at com.haodf.android.posttreatment.doctorhonnrreflect.fragment.UmengShareUtil.shareContentToQQZone(UmengShareUtil.java:220)

at com.haodf.android.basic.home.extension.AdDetailActivity.init(AdDetailActivity.java:74)

at com.haodf.android.base.activity.AbsBaseActivity.onCreate(AbsBaseActivity.java:116)

at android.app.Activity.performCreate(Activity.java:6609)

at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1134)

at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:3104)

at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3261)

at android.app.ActivityThread.access$1000(ActivityThread.java:219)

at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1735)

at android.os.Handler.dispatchMessage(Handler.java:102)

at android.os.Looper.loop(Looper.java:145)

at android.app.ActivityThread.main(ActivityThread.java:6939)

at java.lang.reflect.Method.invoke(Native Method)

at java.lang.reflect.Method.invoke(Method.java:372)

at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1404)

at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1199)

分析

该异常由友盟SDK抛出，友盟SDK在进行QQ分享之前调用下方代码判断是否已安装该应用。

public static boolean isAppInstalled(String var0, Context var1) {

if(var1 == null) {

return false;

} else {

PackageManager var2 = var1.getPackageManager();

boolean var3 = false;

try {

var2.getPackageInfo(var0, 1);

var3 = true;

} catch (NameNotFoundException var5) {

var3 = false;

}

return var3;

}

}

在这段代码中，var2.getPackageInfo(var0, 1);调用时可能引发java.lang.RuntimeException: Package manager has died这个异常。原因是目前版本的QQ(v6.6.9)PackageInfo中数据量太大了，在部分手机上超出了Binder可传递的最大容量，进而导致PacakgeManager崩溃。

验证

我在三星S6 Android6.0.1这部手机上重现了这个崩溃。当我将QQ换为一个较早的版本后，上面检测的这段代码不会引起崩溃，因此验证了我的推断：近期QQ的更新使得PackageInfo增大引发这个异常。另外，这个崩溃不会在所有机型上出现，也不是偶现，只在部分机型上必现。推测和系统层中对Binder传递数据最大容量的不同限制大小有关。

解决

如果是使用友盟分享SDK时发生的问题，请将SDK更新到Android 社会化组件SDK v6.2.3(2017-1-23)以上版本即可修复。

如果是自己写的判断方法报错，继续往下看。

最直接的想法是catch住这个异常，这样处理的确能够避免引发崩溃，可以用来紧急解决崩溃的问题。但是这样做还是无法正常判断QQ是否已经安装。

既然是PackageInfo过大那么我们可以尝试改变getPackageInfo(var0, 1)它的第二个参数flag，使得该方法返回的对象容量减小。

/**

* Retrieve overall information about an application package that is

* installed on the system.

*

* Throws {@link NameNotFoundException} if a package with the given name can

* not be found on the system.

*

* @param packageName The full name (i.e. com.google.apps.contacts) of the

* desired package.

* @param flags Additional option flags. Use any combination of

* {@link #GET_ACTIVITIES}, {@link #GET_GIDS},

* {@link #GET_CONFIGURATIONS}, {@link #GET_INSTRUMENTATION},

* {@link #GET_PERMISSIONS}, {@link #GET_PROVIDERS},

* {@link #GET_RECEIVERS}, {@link #GET_SERVICES},

* {@link #GET_SIGNATURES}, {@link #GET_UNINSTALLED_PACKAGES} to

* modify the data returned.

* @return Returns a PackageInfo object containing information about the

* package. If flag GET_UNINSTALLED_PACKAGES is set and if the

* package is not found in the list of installed applications, the

* package information is retrieved from the list of uninstalled

* applications (which includes installed applications as well as

* applications with data directory i.e. applications which had been

* deleted with {@code DONT_DELETE_DATA} flag set).

* @see #GET_ACTIVITIES

* @see #GET_GIDS

* @see #GET_CONFIGURATIONS

* @see #GET_INSTRUMENTATION

* @see #GET_PERMISSIONS

* @see #GET_PROVIDERS

* @see #GET_RECEIVERS

* @see #GET_SERVICES

* @see #GET_SIGNATURES

* @see #GET_UNINSTALLED_PACKAGES

*/

public abstract PackageInfo getPackageInfo(String packageName, int flags)

throws NameNotFoundException;

在注释中可以看到GET_SIGNATURES这个flag，它的作用是返回应用的签名，我们知道任何应用都只有一个签名，它的大小应该是相对固定的。那么我们只需要改变参数flag的值即可在正确检查是否安装应用的同时避免引发崩溃。

public static boolean isAppInstalled(String var0, Context var1) {

if(var1 == null) {

return false;

} else {

PackageManager var2 = var1.getPackageManager();

boolean var3 = false;

try {

var2.getPackageInfo(var0, PackageManager.GET_SIGNATURES);

var3 = true;

} catch (NameNotFoundException var5) {

var3 = false;

}

return var3;

}

}

总结

虽然这次引发崩溃的是QQ，但今后我们在应用中获取其它应用的PackageInfo时都应该注意这个问题，传递恰当的flag避免同类问题的产生。