在Android 5.0以后，google添加了service启动的component和package判断

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));

}

}

假如component和package为空，就会直接抛出一个IllegalArgumentException的异常，所以这就是为什么我们在5.0以前可以进行隐式启动，而到了5.0以后，隐式启动不起作用。我们可以人为的把这两个参数添加进去，代码如下：

private fun getExplicitIntent(context: Context, implicitIntent: Intent): Intent? {

val pm = context.packageManager

val resolveInfos = pm.queryIntentServices(implicitIntent, 0)

if (resolveInfos == null || resolveInfos.size != 1) {

return null

}

var explicitIntent: Intent?

val info = resolveInfos[0]

val packageName = info.serviceInfo.packageName

val className = info.serviceInfo.name

val component = ComponentName(packageName, className)

explicitIntent = Intent(implicitIntent)

explicitIntent.component = component

return explicitIntent

}

}

image.png

//在新建的intent中填入的是你在清单文件中注册的action

val intent = Intent("com.m163.progress")

//调用上面的getExplicitIntent方法

_mActivity.bindService(getExplicitIntent(context!!, intent), object : ServiceConnection {

override fun onServiceDisconnected(name: ComponentName?) {

}

override fun onServiceConnected(name: ComponentName?, service: IBinder?) {

val progressBinder = service as ProgressService.ProgressBinder

progressBinder.startProgress(progressView1)

}

}, Activity.BIND_AUTO_CREATE)