Android(安卓)5.0 禁止使用隐式Intent来启动Service.异常:service intent must be explicit
16lz
2021-01-24
Android 5.0 禁止使用隐式Intent来启动Service.异常:service intent must be explicit
最近运行了一下我以前做的一个启动service的demo程序,发现!不!好!用!了!看了一下Log异常:service intent must be explicit.什么鬼?什么鬼?什么鬼!上网查了一下,原来从Android 5.0 开始,google出于安全的角度禁止了隐式声明Intent来启动Service.也禁止使用Intent filter.否则就会抛这个个异常出来.
问题分析
首先比对Android 4.4 与 Android 5.0 的区别:
Android 4.4:链接:(/frameworks/base/core/java/android/app/ContextImpl.java)
private void validateServiceIntent(Intent service) { if (service.getComponent() == null && service.getPackage() == null) { if (true || getApplicationInfo().targetSdkVersion >= Build.VERSION_CODES.KITKAT) { Log.w(TAG, "Implicit intents with startService are not safe: " + service + " " + Debug.getCallers(2, 3)); //IllegalArgumentException ex = new IllegalArgumentException( // "Service Intent must be explicit: " + service); //Log.e(TAG, "This will become an error", ex); //throw ex; } } }
Android 5.0:链接:( /frameworks/base/core/java/android/app/ContextImpl.java)
private void validateServiceIntent(Intent service) { if (service.getComponent() == null && service.getPackage() == null) { if (getApplicationInfo().targetSdkVersion >= Build.VERSION_CODES.LOLLIPOP) { IllegalArgumentException ex = new IllegalArgumentException( "Service Intent must be explicit: " + service); throw ex; } else { Log.w(TAG, "Implicit intents with startService are not safe: " + service + " " + Debug.getCallers(2, 3)); } } }
也就是说在5.0里面,如果targetSdkVersion>=LOLLIPOP 就会报异常: “service intent must be explicit”,这就说明1.targetSdkVersion>=LOLLIPOP 2.手机系统为5.0以上版本 3.程序采用隐式Intent调用Service,这三个条件是问题发生的充分必要条件。 另外一点值得注意的是:盲目将程序targetSdkVersion提高容易导致用户手中的软件无法再升级(因为版本的升级功能通常是采用Service的方式)。
解决方案 参考博文:http://blog.csdn.net/vrix/article/details/45289207
方案一:设置Action和packageName(google官方建议):
Intent mIntent = new Intent(); mIntent.setAction("XXX.XXX.XXX"); mIntent.setPackage(getPackageName()); context.startService(mIntent);
方案二:将隐式启动转换为显示启动
实现转换函数:(参考:http://developer.android.com/goo ... tml#billing-service)
public static Intent getExplicitIntent(Context context, Intent implicitIntent) { // Retrieve all services that can match the given intent PackageManager pm = context.getPackageManager(); List resolveInfo = pm.queryIntentServices(implicitIntent, 0); // Make sure only one match was found if (resolveInfo == null || resolveInfo.size() != 1) { return null; } // Get component info and create ComponentName ResolveInfo serviceInfo = resolveInfo.get(0); String packageName = serviceInfo.serviceInfo.packageName; String className = serviceInfo.serviceInfo.name; ComponentName component = new ComponentName(packageName, className); // Create a new intent. Use the old one for extras and such reuse Intent explicitIntent = new Intent(implicitIntent); // Set the component to be explicit explicitIntent.setComponent(component); return explicitIntent; }
调用函数: Intent mIntent = new Intent(); mIntent.setAction("XXX.XXX.XXX"); Intent eintent = new Intent(getExplicitIntent(mContext,mIntent)); context.startService(eintent);
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