</pre><pre name="code" class="java">MainActivity.java package com.android.action.activity; import .Activity; import android.content.Intent; import android.os.Bundle; import android.view.View; import android.view
* {@link android.content.Context#bindService} to communicate with a * background {@link .Service}. * * <p>An Intent provides a facility for performing late runtime binding between the code in * different applications. Its most significant use is in the launching of activities, where it * ...
应用程序通过 Intent 向 Android 系统发出某种请求信息,Android 根据请求的信息内容选择能够处理该请求的组件。例如:使用 Android 手机拨打电话,当按下拨号发送键就会向 Android 系统发送一个具有 CALL_BUTTON 行为的 Intent 对象。Android 系统根据该请求信息,从注册应用的 AndroidManifest.xml 中找到能够处理该请求的电话...
1337);}protectedvoidonActivityResult(int requestCode,int resultCode,Intent data){super.onActivityResult(requestCode,resultCode,data);if(requestCode!=1337||resultCode!=-1||data==null||data.getData()==null){return;}Uri pickedUri=data.getData();File cache...
Intent过滤器(Intent Filter)是一个包含Intent对象的action、data、category属性限制条件的集合,Intent Filter要检测隐式Intent的action、data、category这三个属性,其中任何一项失败,Android系统都不会传递Intent给此组件。一个组件可以有多个Intent Filter,Intent只要通过其中的某个Intent Filter检测,就可以调用此组件。
Android 应用的交互---Intent 为了让用户能够从一个activity跳到另一个activity,我们的app必须使用Intent来定义自己的意图。当使用startActivity()的方法,且参数是intent时,系统会使用这个 Intent 来定义并启动合适的app组件。使用intents甚至还可以让app启动另一个app里面的activity。 Activity...
If you wish to receive a share intent from Chrome, for instance, you have to declare an activity will be responsible for processing the data in yourAndroidManifest.xmlfile: <activityandroid:name="com.codepath.ReceiveIntentDataActivity"><intent-filter><actionandroid:name="android.intent.action.SEN...
* main activity in the package. Returns <code>null</code> if the package * does not contain such an activity, or if <em>packageName</em> is not * recognized. */publicabstract IntentgetLaunchIntentForPackage(String packageName); 所以使用此方式判定 Intent 是否为空即可。
=null){mMainThread.sendActivityResult(mToken,mEmbeddedID,requestCode,ar.getResultCode(),ar.getResultData());}if(requestCode>=0){// If this start is requesting a result, we can avoid making// the activity visible until the result is received. Setting// this code during onCreate(Bundle saved...
val updatedPendingIntent = PendingIntent.getActivity(applicationContext, NOTIFICATION_REQUEST_CODE, anotherIntent, PendingIntent.FLAG_IMMUTABLE or PendingIntent.FLAG_UPDATE_CURRENT) 注意事项 2 - 显式指定可变性:FLAG_MUTABLE 可变标记位是 Android 12 新增的,在 Android 12 之前,未使用 FLAG_IMMUTABLE 不可变标记...