Android Q 版本开机铃声控制

在处理Android Q版本的客户需求时，遇到了一个问题如下：

要求在振动或静音模式下禁止播放开机铃声。

具体的解决思路并不是很复杂，解决方案如下：

path：vendor/mediatek/proprietary/operator/frameworks/bootanimation/MtkBootanimation/BootAnimation.cpp

    // We have no bootanimation file, so we use the stock android logo
     // animation.
     sp<MediaPlayer> mediaplayer;
-    const char* resourcePath = NULL;
+       // Monkey.20200611
+    // const char* resourcePath = NULL;
+       char audio[PROPERTY_VALUE_MAX];
+       property_get("persist.sys.bootanim.play_sound", audio, "1");
+    int index = 0;
+    if (bBootOrShutDown) {
+        index = 0;
+    } else {
+        index = 1;
+    }
+       
+       const char* resourcePath = mAudioPath[index][0];
+     if(atoi(audio) == 0){
+                resourcePath = NULL;
+        }
+       //for bootanimation end
+       
     status_t mediastatus = NO_ERROR;
     if (resourcePath != NULL) {
         bPlayMP3 = true;

根据系统属性persist.sys.bootanim.play_sound去控制开机铃声是否播放

path：frameworks/base/services/core/java/com/android/server/audio/AudioService.java

 
         int maxSystemVolume = SystemProperties.getInt("ro.config.system_vol_steps", -1);
@@ -4955,6 +4963,17 @@ public class AudioService extends IAudioService.Stub
                 intent.putExtra(AudioManager.EXTRA_STREAM_VOLUME_MUTED, state);
                 sendBroadcastToAll(intent);
             }
+                       // Monkey.20201219 bootanim play sound
+                       if (mStreamType == AudioSystem.STREAM_SYSTEM) {
+                               if (state) {
+                                       Log.d("monkey_boot","resourcePath = NULL|"+state+"-|-"+SystemProperties.get("persist.sys.bootanim.play_sound","-1"));
+                                       SystemProperties.set("persist.sys.bootanim.play_sound", "0");
+                               } else {
+                                       SystemProperties.set("persist.sys.bootanim.play_sound", "1");
+                                       Log.d("monkey_boot","resourcePath = NULL|"+state+"-|-"+SystemProperties.get("persist.sys.bootanim.play_sound","-1"));
+                               }
+                       }
+                       // end
         }
 
         public int getStreamType() {

然后烧录进行验证，问题解决！

注：关于添加开机铃声方式网上很多，这部分就不做记录，我是在vendor下面处理的开机铃声。

本文地址：https://blog.csdn.net/CodingNotes/article/details/111830812