通过命令发送按键到Android系统

来源：互联网发布：tensorflow 手写识别编辑：程序博客网时间：2024/05/08 02:53

有时PAD或者VR机器上没有物理按键，但却想给应用发送这样的按键来测试应用程序是否OK，可以通过串口或者ADB执行以下命令达到目的：
input keyevent 键值名称

举几个例子：
模拟人的手指触摸HOME按键退到Launcher主界面：input keyevent HOME
模拟Android电视盒的遥控器发送MENU按键：input keyevent MENU
模拟物理键盘按向左键：input keyevent DPAD_LEFT

那后面的键值名称该写什么呢，看这个文件就好了：android/frameworks/base/core/java/android/view/KeyEvent.java，随便截取一段如下：
107     public static final int KEYCODE_1               = 8;
108     /** Key code constant: '2' key. */
109     public static final int KEYCODE_2               = 9;
110     /** Key code constant: '3' key. */
111     public static final int KEYCODE_3               = 10;
112     /** Key code constant: '4' key. */
113     public static final int KEYCODE_4               = 11;
114     /** Key code constant: '5' key. */
115     public static final int KEYCODE_5               = 12;
116     /** Key code constant: '6' key. */
117     public static final int KEYCODE_6               = 13;
118     /** Key code constant: '7' key. */
119     public static final int KEYCODE_7               = 14;
120     /** Key code constant: '8' key. */
121     public static final int KEYCODE_8               = 15;
122     /** Key code constant: '9' key. */
123     public static final int KEYCODE_9               = 16;
124     /** Key code constant: '*' key. */
125     public static final int KEYCODE_STAR            = 17;
126     /** Key code constant: '#' key. */
127     public static final int KEYCODE_POUND           = 18;
128     /** Key code constant: Directional Pad Up key.
129      * May also be synthesized from trackball motions. */
130     public static final int KEYCODE_DPAD_UP         = 19;
131     /** Key code constant: Directional Pad Down key.
132      * May also be synthesized from trackball motions. */
133     public static final int KEYCODE_DPAD_DOWN       = 20;
134     /** Key code constant: Directional Pad Left key.
135      * May also be synthesized from trackball motions. */
136     public static final int KEYCODE_DPAD_LEFT       = 21;
137     /** Key code constant: Directional Pad Right key.
138      * May also be synthesized from trackball motions. */
139     public static final int KEYCODE_DPAD_RIGHT      = 22;
140     /** Key code constant: Directional Pad Center key.
141      * May also be synthesized from trackball motions. */
142     public static final int KEYCODE_DPAD_CENTER     = 23;
143     /** Key code constant: Volume Up key.
144      * Adjusts the speaker volume up. */
145     public static final int KEYCODE_VOLUME_UP       = 24;
146     /** Key code constant: Volume Down key.
147      * Adjusts the speaker volume down. */
148     public static final int KEYCODE_VOLUME_DOWN     = 25;
149     /** Key code constant: Power key. */
150     public static final int KEYCODE_POWER           = 26;

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