Rename keycode injection method

Make it explicit that it injects both "press" and "release" events.

server/src/main/java/com/genymobile/scrcpy/Controller.java

@@ -55,7 +55,7 @@ public class Controller {
     public void control() throws IOException {
         // on start, power on the device
         if (!Device.isScreenOn()) {
-            device.injectKeycode(KeyEvent.KEYCODE_POWER);
+            device.pressReleaseKeycode(KeyEvent.KEYCODE_POWER);
 
             // dirty hack
             // After POWER is injected, the device is powered on asynchronously.
@@ -273,7 +273,7 @@ public class Controller {
         if (keepPowerModeOff) {
             schedulePowerModeOff();
         }
-        return device.injectKeycode(KeyEvent.KEYCODE_POWER);
+        return device.pressReleaseKeycode(KeyEvent.KEYCODE_POWER);
     }
 
     private boolean setClipboard(String text, boolean paste) {
@@ -284,7 +284,7 @@ public class Controller {
 
         // On Android >= 7, also press the PASTE key if requested
         if (paste && Build.VERSION.SDK_INT >= Build.VERSION_CODES.N && device.supportsInputEvents()) {
-            device.injectKeycode(KeyEvent.KEYCODE_PASTE);
+            device.pressReleaseKeycode(KeyEvent.KEYCODE_PASTE);
         }
 
         return ok;

server/src/main/java/com/genymobile/scrcpy/Device.java

@@ -191,12 +191,12 @@ public final class Device {
         return injectKeyEvent(action, keyCode, repeat, metaState, displayId);
     }
 
-    public static boolean injectKeycode(int keyCode, int displayId) {
+    public static boolean pressReleaseKeycode(int keyCode, int displayId) {
         return injectKeyEvent(KeyEvent.ACTION_DOWN, keyCode, 0, 0, displayId) && injectKeyEvent(KeyEvent.ACTION_UP, keyCode, 0, 0, displayId);
     }
 
-    public boolean injectKeycode(int keyCode) {
-        return injectKeycode(keyCode, displayId);
+    public boolean pressReleaseKeycode(int keyCode) {
+        return pressReleaseKeycode(keyCode, displayId);
     }
 
     public static boolean isScreenOn() {
@@ -272,7 +272,7 @@ public final class Device {
         if (!isScreenOn()) {
             return true;
         }
-        return injectKeycode(KeyEvent.KEYCODE_POWER, displayId);
+        return pressReleaseKeycode(KeyEvent.KEYCODE_POWER, displayId);
     }
 
     /**