测试按键响应的activity && getevent和setevent 用adb模拟按键和TP

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迪博威 2021-08-15 12:30:37 博主文章分类：Android

文章标签 android sed i++ #define xml 文章分类 Android 移动开发

工程模式中用来测试按键响应的方法。通过列出测试按钮，按下某个键就设置该键显示变化即可。

（1）放置按钮的layout xml如下：

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
  xmlns:android="http://schemas.android.com/apk/res/android"
  android:layout_width="fill_parent"
  android:layout_height="fill_parent">

    <TextView
        android:id="@+id/title"
        android:layout_width="fill_parent"
        android:layout_height="50dip"
        android:layout_alignParentTop="true"
        android:background="@android:color/darker_gray"
        android:gravity="center"
        android:text="@string/device_key_test"
        android:textAppearance="@android:style/TextAppearance.Large" />
    	
    <TableLayout 
    	android:id="@+id/table_layout"
    	android:layout_width="wrap_content"
    	android:layout_height="wrap_content"
    	android:layout_below="@id/title">
    </TableLayout>    
</RelativeLayout>

可根据实际情况来修改

（2）新建key类

	public static class Key {
		Button button;
		int keyCode;
		String keyName;
		boolean keyPressed;

		public Key(int keyCode, String keyName, boolean keyPressed) {
			this.keyCode = keyCode;
			this.keyName = keyName;
			this.keyPressed = keyPressed;
		}
	}

并在activity的开始初始化数按键序列数组：

	private TableLayout mTableLayout;
	public final static String TAG = "DeviceKeyTest";
	private final static int COLUMN = 2;	//一行两个按键控件

	private static Key[] keyMap = {
		new Key(KeyEvent.KEYCODE_VOLUME_DOWN, "volume_down", false),
		new Key(KeyEvent.KEYCODE_VOLUME_UP, "volume_up", false),
		new Key(KeyEvent.KEYCODE_BACK, "back", false),
        	new Key(KeyEvent.KEYCODE_MENU, "menu", false),  
	};

（3）onCreate内容

protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        for (int i = 0; i < keyMap.length; i++){
			keyMap[i].keyPressed = false;
		}
        
        mTableLayout = (TableLayout) findViewById(R.id.table_layout);
		mTableLayout.setStretchAllColumns(true);
		int totalCount = keyMap.length;
		int row = totalCount / COLUMN;
		int surplus = totalCount % COLUMN;
		Log.d(TAG, "row = " + row + " , surplus = " + surplus);
//在mTableLayout上放置测试按键序列		
		for (int i = 0; i < row; i++) {
 			TableRow newRow = new TableRow(this);
 			newRow.setWeightSum(COLUMN);
			for (int k = 0; k < COLUMN; k++) {
				final Button button = new Button(this);
				button.setTextAppearance(this,
						android.R.style.TextAppearance_Large);
				button.setText(keyMap[i * COLUMN + k].keyName);
				button.setSingleLine();
				button.setTextColor(Color.BLUE);
				button.setTextSize(21);
				button.setGravity(Gravity.CENTER);
				button.setLayoutParams(new LayoutParams(
						LayoutParams.MATCH_PARENT, LayoutParams.MATCH_PARENT));
				keyMap[i * COLUMN + k].button = button;
				newRow.addView(button, new TableRow.LayoutParams());
			}
			mTableLayout.addView(newRow, new TableLayout.LayoutParams());
		}
//不足一行的按键控件处理		
		if (surplus > 0) {
			TableRow surplusRow = new TableRow(this);
			for (int i = 0; i < surplus; i++) {
				final Button button = new Button(this);
				button.setTextAppearance(this,
						android.R.style.TextAppearance_Large);
				button.setText(keyMap[row * COLUMN + i].keyName);
				button.setSingleLine();
				button.setTextColor(Color.BLUE);
				button.setTextSize(21);
				button.setGravity(Gravity.CENTER);
				keyMap[row * COLUMN + i].button = button;
				surplusRow.addView(button, new TableRow.LayoutParams());
			}
			mTableLayout.addView(surplusRow, new TableLayout.LayoutParams());
		}
    }

（4）key的处理

    public boolean dispatchKeyEvent(KeyEvent event){
    	Log.d(TAG, "DeviceKeyTest: dispatchKeyEvent ");
    	boolean isPressed = false;
		if (event.getAction() == KeyEvent.ACTION_DOWN) {
			for (int i = 0; i < keyMap.length; i++) {
				if (keyMap[i].keyCode == event.getKeyCode()) {
					Log.d(TAG, "keyMap[i].keyName = " + keyMap[i].keyName);
					keyMap[i].keyPressed = true;
					keyMap[i].button.setVisibility(View.INVISIBLE);
					isPressed = true;
				}
			}

			if (isPressed) {
				boolean isAllPressed = true;
				for (int i = 0; i < keyMap.length; i++) {
					if (!keyMap[i].keyPressed) {
						isAllPressed = false;
						break;
					}
				}
				if (isAllPressed) {
					this.finish();
				}
				return true;
			}
		}
    	return false;
    }

验证结果如下：

测试按键响应的activity && getevent和setevent 用adb模拟按键和TP_xml

========================================================================================================

getevent&sendevent 是android系统下的一个工具，可以获取和模拟多种按键和触屏操作，期间获取和产生的产生的是raw event。关于event设备的获取，在 /proc/bus/input/devices 下面：$ adb shell cat /proc/bus/input/devices得到详细信息

（1）getevent首先在adb shell后执行getevent获取当前系统注册的input event信息。

getevent
add device 1: /dev/input/event4
name: "AVRCP"
add device 2: /dev/input/event0
name: "mtk-kpd"
add device 3: /dev/input/event3
name: "hwmdata"
could not get driver version for /dev/input/mouse0, Not a typewriter
add device 4: /dev/input/event2
name: "mtk-tpd"
add device 5: /dev/input/event1
name: "ACCDET"

按下一次按键时显示：

/dev/input/event0: 0001 0074 00000001
/dev/input/event0: 0000 0000 00000000
/dev/input/event0: 0001 0074 00000000
/dev/input/event0: 0000 0000 00000000

其中/dev/input/event0是device的名字，0001是type，0074 是键码，最后一个根据type不同而不同，比如1按下0弹起。其中type如下定义：
#define EV_SYN 0x00
#define EV_KEY 0x01
#define EV_REL 0x02
#define EV_ABS 0x03

...................................

键码的定义就是Linux的标准值，Input.h。

点击一次TP显示（不确定黑色重复部分为何会有）：

/dev/input/event2: 0001 014a 00000001 //input_report_key(tpd->dev, BTN_TOUCH, 1);
/dev/input/event2: 0003 0030 00000001 //input_report_abs(tpd->dev, ABS_MT_TOUCH_MAJOR, 1);
/dev/input/event2: 0003 0035 000000af //input_report_abs(tpd->dev, ABS_MT_POSITION_X, x);
/dev/input/event2: 0003 0036 0000008e //input_report_abs(tpd->dev, ABS_MT_POSITION_Y, y);
/dev/input/event2: 0003 0039 00000000 //input_report_abs(tpd->dev, ABS_MT_TRACKING_ID, p);
/dev/input/event2: 0000 0002 00000000 //input_mt_sync(tpd->dev);
/dev/input/event2: 0000 0000 00000000 //结束
/dev/input/event2: 0003 0030 00000001
/dev/input/event2: 0003 0035 000000af
/dev/input/event2: 0003 0036 0000008e
/dev/input/event2: 0003 0039 00000000
/dev/input/event2: 0000 0002 00000000
/dev/input/event2: 0000 0000 00000000
/dev/input/event2: 0001 014a 00000000   //input_report_key(tpd->dev, BTN_TOUCH, 0);
/dev/input/event2: 0003 0030 00000000   //input_report_abs(tpd->dev, ABS_MT_TOUCH_MAJOR, 1);
/dev/input/event2: 0003 0035 000000af //input_report_abs(tpd->dev, ABS_MT_POSITION_X, x);
/dev/input/event2: 0003 0036 0000008e   //input_report_abs(tpd->dev, ABS_MT_POSITION_Y, y);
/dev/input/event2: 0000 0002 00000000 //input_mt_sync(tpd->dev);
/dev/input/event2: 0000 0002 00000000
/dev/input/event2: 0000 0000 00000000 //结束

（2）setevent模拟发送一个input消息，命令格式：

adb shell sendevent [device] [type] [code] [value]，发送时间、格式和上面的一样，需要注意的是在get中code显示的是十六进制，而send中需要用十进制。

如果要模拟一次电源键，进adb shell后执行

sendevent /dev/input/event0 0001 0116 00000001
sendevent /dev/input/event0 0000 0000 00000000
sendevent /dev/input/event0 0001 0116 00000000
sendevent /dev/input/event0 0000 0000 00000000

模拟一次TP操作，实验不成功