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android 5.0 远程开启服务学习笔记

2015-06-24 17:55 579 查看
原文链接:http://blog.csdn.net/vrix/article/details/45289207

有些时候我们使用Service的时需要采用隐私启动的方式,但是Android 5.0一出来后,其中有个特性就是Service
Intent must be explitict,也就是说从Lollipop开始,service服务必须采用显示方式启动。

而android源码是这样写的(源码位置:sdk/sources/android-21/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));

}

}

}

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既然,源码里是这样写的,那么这里有两种解决方法:

1、设置Action和packageName:

参考代码如下:

Intent mIntent = new Intent();

mIntent.setAction("XXX.XXX.XXX");//你定义的service的action

mIntent.setPackage(getPackageName());//这里你需要设置你应用的包名

context.startService(mIntent);

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此方式是google官方推荐使用的解决方法。

在此附上地址供大家参考:http://developer.android.com/goo
... tml#billing-service,有兴趣的可以去看看。

2、将隐式启动转换为显示启动:--参考地址:http://stackoverflow.com/a/26318757/1446466

public static Intent getExplicitIntent(Context context, Intent implicitIntent) {

// Retrieve all services that can match the given intent

PackageManager pm = context.getPackageManager();

List<ResolveInfo> 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;

}

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调用方式如下:

Intent mIntent = new Intent();

mIntent.setAction("XXX.XXX.XXX");

Intent eintent = new Intent(getExplicitIntent(mContext,mIntent));

context.startService(eintent);

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