frameworks/base/services/core/java/com/android/server/media/MediaSessionService.java

--- a/mt8788/frameworks/base/services/core/java/com/android/server/media/MediaSessionService.java

+++ b/mt8788/frameworks/base/services/core/java/com/android/server/media/MediaSessionService.java

@@ -81,7 +81,7 @@ import android.util.SparseArray;

import android.util.SparseIntArray;

import android.view.KeyEvent;

import android.view.ViewConfiguration;

-

+import android.view.WindowManager;

import com.android.internal.os.BackgroundThread;

import com.android.internal.util.DumpUtils;

import com.android.server.SystemService;

@@ -1434,13 +1434,30 @@ public class MediaSessionService extends SystemService implements Monitor {

boolean down = keyEvent.getAction() == KeyEvent.ACTION_DOWN;

boolean up = keyEvent.getAction() == KeyEvent.ACTION_UP;

int direction = 0;

+ int rotation = ((WindowManager) getContext().getSystemService(Context.WINDOW_SERVICE)).getDefaultDisplay().getRotation();

+ int device_id = keyEvent.getDeviceId();

+ Log.d("addlog", "====================rotation = "+ rotation);

boolean isMute = false;

switch (keyEvent.getKeyCode()) {

case KeyEvent.KEYCODE_VOLUME_UP:

- direction = AudioManager.ADJUST_RAISE;

+ if(device_id==1){

+ direction = (rotation == 0 || rotation == 1) ? AudioManager.ADJUST_LOWER : AudioManager.ADJUST_RAISE;

+ }else{

+ direction = AudioManager.ADJUST_RAISE;

+ }

break;

case KeyEvent.KEYCODE_VOLUME_DOWN:

- direction = AudioManager.ADJUST_LOWER;

+ if(device_id==1){

+ direction = (rotation == 0 || rotation == 1) ? AudioManager.ADJUST_RAISE : AudioManager.ADJUST_LOWER;

+ }else{

+ direction = AudioManager.ADJUST_LOWER;

+ }

break;

case KeyEvent.KEYCODE_VOLUME_MUTE:

isMute = true;

注：Android O还需修改如下文件：

frameworks/base/core/java/com/android/internal/policy/PhoneWindow.java

--- a/mt8167/frameworks/base/core/java/com/android/internal/policy/PhoneWindow.java

+++ b/mt8167/frameworks/base/core/java/com/android/internal/policy/PhoneWindow.java

@@ -1866,6 +1866,11 @@ public class PhoneWindow extends Window implements MenuBuilder.Callback {

//Log.i(TAG, "Key down: repeat=" + event.getRepeatCount()

// + " flags=0x" + Integer.toHexString(event.getFlags()));

+ int rotation = ((WindowManager) getContext().getSystemService(Context.WINDOW_SERVICE)).getDefaultDisplay().getRotation();

+ int device_id = event.getDeviceId();

switch (keyCode) {

case KeyEvent.KEYCODE_VOLUME_UP:

case KeyEvent.KEYCODE_VOLUME_DOWN:

@@ -1876,10 +1881,22 @@ public class PhoneWindow extends Window implements MenuBuilder.Callback {

int direction = 0;

switch (keyCode) {

case KeyEvent.KEYCODE_VOLUME_UP:

- direction = AudioManager.ADJUST_RAISE;

+ if(device_id==1){

+ direction = (rotation == 2 || rotation == 1) ? AudioManager.ADJUST_LOWER : AudioManager.ADJUST_RAISE;

+ }else{

+ direction = AudioManager.ADJUST_RAISE;

+ }

break;

case KeyEvent.KEYCODE_VOLUME_DOWN:

- direction = AudioManager.ADJUST_LOWER;

+ if(device_id==1){

+ direction = (rotation == 2 || rotation == 1) ? AudioManager.ADJUST_RAISE : AudioManager.ADJUST_LOWER;

+ }else{

+ direction = AudioManager.ADJUST_LOWER;

+ }

break;

case KeyEvent.KEYCODE_VOLUME_MUTE:

direction = AudioManager.ADJUST_TOGGLE_MUTE;

标签：java,direction,rotation,AudioManager,ADJUST,音量,UI,Android,android

来源： https://blog.csdn.net/jydzm/article/details/97369702