Android 通过命令行启动Activity

原文地址：https://blog.csdn.net/u010784887/article/details/51598719

https://blog.csdn.net/u012968101/article/details/51089442

https://www.cnblogs.com/tianzijiaozi/p/8081901.html

启动Activity：

1.在清单文件manifreast.xml中,找到对应的activity添加 android:exported="true"属性

2.adb shell am start -n packageName/.ActivityName就可以启动任意的activity

PS：

android:exported 是Android中的四大组件 Activity，Service，Provider，Receiver 四大组件中都会有的一个属性。

总体来说它的主要作用是：是否支持其它应用调用当前组件。
默认值：如果包含有intent-filter 默认值为true; 没有intent-filter默认值为false。

通过am命令可以启动任何一个activity，如果启动Main Activity就等于是启动了相应的apk

am 命令代码位置：frameworks\base\cmds\am\src\com\android\commands\am

使用 am -help 可以查看该命令详细的用法，以下是截取的部分常用用法：

     am start: start an Activity. Options are:
    -D: enable debugging
    -W: wait for launch to complete
    --start-profiler : start profiler and send results to
    --sampling INTERVAL: use sample profiling with INTERVAL microseconds between samples (use with --start-profiler)
    -P : like above, but profiling stops when app goes idle
    -R: repeat the activity launch times. Prior to each repeat, the top activity will be finished.
    -S: force stop the target app before starting the activity
    --opengl-trace: enable tracing of OpenGL functions
    --user | current: Specify which user to run as; if not specified then run as the current user.

am startservice: start a Service. Options are:
--user | current: Specify which user to run as; if not specified then run as the current user.

am stopservice: stop a Service. Options are:
--user | current: Specify which user to run as; if not specified then run as the current user.

am force-stop: force stop everything associated with .
--user | all | current: Specify user to force stop; all users if not specified.

     am kill: Kill all processes associated with . Only kills.
           processes that are safe to kill -- that is, will not impact the user experience.
           --user | all | current: Specify user whose processes to kill; all users if not specified.

am kill-all: Kill all background processes.

     am broadcast: send a broadcast Intent. Options are:
           --user | all | current: Specify which user to send to; if not specified then send to all users.
           --receiver-permission : Require receiver to hold permission.

1. 启动一个指定的组件

命令： am start -n

adb shell am start -n 包名 / 包含包名的Activity 或者service

Camera（照相机）的启动：

adb shell am start -n com.android.camera/com.android.camera.Camera
Browser（浏览器）的启动：
adb shell am start -n com.android.browser/com.android.browser.BrowserActivity
2. 使用Action隐式的启动

按照指定的地址启动浏览器:

adb shell am start -a android.intent.action.VIEW -d http://www.baidu.cn/
拨打电话 :
adb shell am start -a android.intent.action.CALL -d tel:10086
3. 启动一个服务service

am startservice -n com.android.music/com.android.music.MediaService
4. 发送一个广播

am broadcast -a

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