# PressKeyCode ~~~ package io.appium.android.bootstrap.handler; import com.android.uiautomator.core.UiDevice; import io.appium.android.bootstrap.AndroidCommand; import io.appium.android.bootstrap.AndroidCommandResult; import io.appium.android.bootstrap.CommandHandler; import org.json.JSONException; import org.json.JSONObject; import java.util.Hashtable; /** * This handler is used to PressKeyCode. * */ public class PressKeyCode extends CommandHandler { public Integer keyCode; public Integer metaState; /* * @param command The {@link AndroidCommand} used for this handler. * * @return {@link AndroidCommandResult} * * @throws JSONException * * @see io.appium.android.bootstrap.CommandHandler#execute(io.appium.android. * bootstrap.AndroidCommand) */ @Override public AndroidCommandResult execute(final AndroidCommand command) throws JSONException { try { final Hashtable<String, Object> params = command.params(); Object kc = params.get("keycode"); if (kc instanceof Integer) { keyCode = (Integer) kc; } else if (kc instanceof String) { keyCode = Integer.parseInt((String) kc); } else { throw new IllegalArgumentException("Keycode of type " + kc.getClass() + "not supported."); } if (params.get("metastate") != JSONObject.NULL) { metaState = (Integer) params.get("metastate"); UiDevice.getInstance().pressKeyCode(keyCode, metaState); } else { UiDevice.getInstance().pressKeyCode(keyCode); } return getSuccessResult(true); } catch (final Exception e) { return getErrorResult(e.getMessage()); } } } ~~~ 有的时候手机键盘的一些键需要按，但是又没有像pressBack这种方法供我们直接调用，这个时候我们就需要发送键盘的keycode来模拟这些键被点击。所以PressKeyCode就是封装这类事件的，通过上面的代码可以看出，发送keycode分2类事件，每一类调用的方法不一样 * 单点键：pressKeyCode(keyCode,metaState) * 组合键:  pressKeyCode(keyCode,metaState) # LongPressKeyCode ~~~ package io.appium.android.bootstrap.handler; import android.os.SystemClock; import android.view.InputDevice; import android.view.InputEvent; import android.view.KeyCharacterMap; import android.view.KeyEvent; import com.android.uiautomator.common.ReflectionUtils; import io.appium.android.bootstrap.AndroidCommand; import io.appium.android.bootstrap.AndroidCommandResult; import io.appium.android.bootstrap.CommandHandler; import org.json.JSONException; import org.json.JSONObject; import java.lang.reflect.Method; import java.util.Hashtable; /** * This handler is used to LongPressKeyCode. * */ public class LongPressKeyCode extends CommandHandler { public Integer keyCode; public Integer metaState; /* * @param command The {@link AndroidCommand} used for this handler. * * @return {@link AndroidCommandResult} * * @throws JSONException * * @see io.appium.android.bootstrap.CommandHandler#execute(io.appium.android. * bootstrap.AndroidCommand) */ @Override public AndroidCommandResult execute(final AndroidCommand command) throws JSONException { try { final ReflectionUtils utils = new ReflectionUtils(); final Method injectEventSync = utils.getControllerMethod("injectEventSync", InputEvent.class); final Hashtable<String, Object> params = command.params(); keyCode = (Integer) params.get("keycode"); metaState = params.get("metastate") != JSONObject.NULL ? (Integer) params .get("metastate") : 0; final long eventTime = SystemClock.uptimeMillis(); // Send an initial down event final KeyEvent downEvent = new KeyEvent(eventTime, eventTime, KeyEvent.ACTION_DOWN, keyCode, 0, metaState, KeyCharacterMap.VIRTUAL_KEYBOARD, 0, 0, InputDevice.SOURCE_KEYBOARD); if ((Boolean) injectEventSync.invoke(utils.getController(), downEvent)) { // Send a repeat event. This will cause the FLAG_LONG_PRESS to be set. final KeyEvent repeatEvent = KeyEvent.changeTimeRepeat(downEvent, eventTime, 1); injectEventSync.invoke(utils.getController(), repeatEvent); // Finally, send the up event final KeyEvent upEvent = new KeyEvent(eventTime, eventTime, KeyEvent.ACTION_UP, keyCode, 0, metaState, KeyCharacterMap.VIRTUAL_KEYBOARD, 0, 0, InputDevice.SOURCE_KEYBOARD); injectEventSync.invoke(utils.getController(), upEvent); } return getSuccessResult(true); } catch (final Exception e) { return getErrorResult(e.getMessage()); } } } ~~~ 长点击某个键盘键，和上面的单击是有区别的，因为没有直接的API可以调用，所以又要用到反射来做这件事，这次的反射呢调用的是InteractionController中的injectEventSync方法，首先会执行ACTION_DOWN,然后在一段时间里会重复执行这个down的动作，等事件到了以后，执行ACTION_UP这个动作松开键盘键。从而达到了我们到长按到要求。