Android源码修改实现动态地隐藏和显示状态栏_onoverlaychangedlw

修改PhoneWindowManager.java:

+    public void hideStatusBar(boolean hide) {
+    	mHideStatusBar = hide;
+    	onOverlayChangedLw();
+	}

   @Override
    public void onOverlayChangedLw() {
        onConfigurationChanged();
    }

    @Override
    public void onConfigurationChanged() {
        Context uiContext = getSystemUiContext();
        final Resources res = uiContext.getResources();

+		if(mHideStatusBar) { 
+			mStatusBarHeightForRotation[mPortraitRotation] =
+                mStatusBarHeightForRotation[mUpsideDownRotation] = 0;
+            mStatusBarHeightForRotation[mLandscapeRotation] =
+                mStatusBarHeightForRotation[mSeascapeRotation] = 0;
+		} else {
			mStatusBarHeightForRotation[mPortraitRotation] =
                mStatusBarHeightForRotation[mUpsideDownRotation] = res.getDimensionPixelSize(
                                com.android.internal.R.dimen.status_bar_height_portrait);
            mStatusBarHeightForRotation[mLandscapeRotation] =
                mStatusBarHeightForRotation[mSeascapeRotation] = res.getDimensionPixelSize(
                        com.android.internal.R.dimen.status_bar_height_landscape);
+		}
		//以下省略
		........
}
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调用hideStatusBar方法，可实现动态显示和隐藏状态栏，隐藏是去掉状态栏高度的。状态栏是锁屏的一部分，这样修改不影响锁屏功能。