Android 记录锁屏的上层相关源码以及debug WindowManager

SettingsProvider

frameworks/base/packages/SettingsProvider/res/values/defaults.xml
device/rockchip/rk356x/overlay/frameworks/base/packages/SettingsProvider/res/values/defaults.xml

//device的overlay会覆盖frameworks的SettingsProvider
// 关于锁屏配置
0x60000
false

KeyGuard

frameworks/base/services/core/java/com/android/server/wm/RootWindowContainer.java

final int type = attrs.type;
// This function assumes that the contents of the default display are processed first
// before secondary displays.
final DisplayContent displayContent = w.getDisplayContent();
if (displayContent != null && displayContent.isDefaultDisplay) {
// While a dream or keyguard is showing, obscure ordinary application content on
// secondary displays (by forcibly enabling mirroring unless there is other content
// we want to show) but still allow opaque keyguard dialogs to be shown.
if (w.isDreamWindow() || mWmService.mPolicy.isKeyguardShowing()) {
mObscureApplicationContentOnSecondaryDisplays = true;
}
displayHasContent = true;
} else if (displayContent != null &&
(!mObscureApplicationContentOnSecondaryDisplays
|| (obscured && type == TYPE_KEYGUARD_DIALOG))) {
// Allow full screen keyguard presentation dialogs to be seen.
displayHasContent = true;
}
if ((privateflags & PRIVATE_FLAG_SUSTAINED_PERFORMANCE_MODE) != 0) {
mSustainedPerformanceModeCurrent = true;
}

FallbackHome

frameworks/base/services/core/java/com/android/server/wm/WindowManagerService.java

//box:skip FallbackHome to fix 2-3s black screen before launcher.
if (!"box".equals(SystemProperties.get("ro.target.product"))) {
if (!mBootAnimationStopped) {
Trace.asyncTraceBegin(TRACE_TAG_WINDOW_MANAGER, "Stop bootanim", 0);
// stop boot animation
// formerly we would just kill the process, but we now ask it to exit so it
// can choose where to stop the animation.
SystemProperties.set("service.bootanim.exit", "1");
mBootAnimationStopped = true;
}

复制代码

          if (!mForceDisplayEnabled && !checkBootAnimationCompleteLocked()) {
              ProtoLog.i(WM_DEBUG_BOOT, "performEnableScreen: Waiting for anim complete");
              return;
          }

          try {
              IBinder surfaceFlinger = ServiceManager.getService("SurfaceFlinger");
              if (surfaceFlinger != null) {
                  ProtoLog.i(WM_ERROR, "******* TELLING SURFACE FLINGER WE ARE BOOTED!");
                  Parcel data = Parcel.obtain();
                  data.writeInterfaceToken("android.ui.ISurfaceComposer");
                  surfaceFlinger.transact(IBinder.FIRST_CALL_TRANSACTION, // BOOT_FINISHED
                          data, null, 0);
                  data.recycle();
              }
          } catch (RemoteException ex) {
              ProtoLog.e(WM_ERROR, "Boot completed: SurfaceFlinger is dead!");
          }
      }

调试

frameworks/base/services/core/java/com/android/server/wm/WindowManagerDebugConfig.java
打开对应日志打印，来debug WindowManager

复制代码

  static final String TAG_WM = "WindowManager";

  static final boolean DEBUG = false;
  static final boolean DEBUG_ANIM = false;
  static final boolean DEBUG_LAYOUT = false;
  static final boolean DEBUG_LAYERS = false;
  static final boolean DEBUG_INPUT = false;
  static final boolean DEBUG_INPUT_METHOD = false;
  static final boolean DEBUG_VISIBILITY = false;
  static final boolean DEBUG_CONFIGURATION = false;
  static final boolean DEBUG_STARTING_WINDOW_VERBOSE = false;
  static final boolean DEBUG_WALLPAPER = false;
  static final boolean DEBUG_WALLPAPER_LIGHT = false || DEBUG_WALLPAPER;
  static final boolean DEBUG_DRAG = false;
  static final boolean DEBUG_SCREENSHOT = false;
  static final boolean DEBUG_LAYOUT_REPEATS = false;
  static final boolean DEBUG_WINDOW_TRACE = false;