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android命令行播放mp3
在android的在命令行下,可以使用强大的am指令做很多事情。
在android终端输入am,正常情况下会有如下提示信息:
# am
usage: am [subcommand] [options]
start an Activity: am start [-D] [-W] <INTENT>
-D: enable debugging
-W: wait for launch to complete
start a Service: am startservice <INTENT>
send a broadcast Intent: am broadcast <INTENT>
start an Instrumentation: am instrument [flags] <COMPONENT>
-r: print raw results (otherwise decode REPORT_KEY_STREAMRESULT)
-e <NAME> <VALUE>: set argument <NAME> to <VALUE>
-p <FILE>: write profiling data to <FILE>
-w: wait for instrumentation to finish before returning
start profiling: am profile <PROCESS> start <FILE>
stop profiling: am profile <PROCESS> stop
<INTENT> specifications include these flags:
[-a <ACTION>] [-d <DATA_URI>] [-t <MIME_TYPE>]
[-c <CATEGORY> [-c <CATEGORY>] ...]
[-e|--es <EXTRA_KEY> <EXTRA_STRING_VALUE> ...]
[--esn <EXTRA_KEY> ...]
[--ez <EXTRA_KEY> <EXTRA_BOOLEAN_VALUE> ...]
[-e|--ei <EXTRA_KEY> <EXTRA_INT_VALUE> ...]
[-n <COMPONENT>] [-f <FLAGS>]
[--grant-read-uri-permission] [--grant-write-uri-permission]
[--debug-log-resolution]
[--activity-brought-to-front] [--activity-clear-top]
[--activity-clear-when-task-reset] [--activity-exclude-from-recents]
[--activity-launched-from-history] [--activity-multiple-task]
[--activity-no-animation] [--activity-no-history]
[--activity-no-user-action] [--activity-previous-is-top]
[--activity-reorder-to-front] [--activity-reset-task-if-needed]
[--activity-single-top]
[--receiver-registered-only] [--receiver-replace-pending]
[<URI>]
#
启动的方法为:
# am start -n 包(package)名/包名.活动(activity)名称
启动的方法可以从每个应用的AndroidManifest.xml的文件中得到,以计算器(calculator)为例,
<?xml version="1.0" encoding=""?>
<manifestxmlns:android="http://schemas.android.com/apk/res/android"
package="com.android.calculator2">
<applicationandroid:label="@string/app_name"android:icon="@drawable/icon">
<activity android:name="Calculator"
android:theme="@android:style/Theme.Black">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<categoryandroid:name="android.intent.category.LAUNCHER"/>
</intent-filter>
</activity>
</application>
</manifest>
由此计算器(calculator)的启动方法为:
# am start-ncom.android.calculator2/com.android.calculator2.Calculator
Music的启动方法为:
# am start-ncom.android.music/com.android.music.MusicBrowserActivity
这时,屏幕上会有music的播放列表,但是并没有播放。如果需要播放,得执行下面的指令:
am start -n com.android.music/com.android.music.MediaPlaybackActivity -d /sdcard/liangliangxianwang.mp3
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