android navigationbar相關修改

① navigationbar橫屏底部顯示

源碼路徑： framework/base/services/core/java/come/android/server/policy/PhoneWindowManager.java

mtk8.1 作如下修改：

mNavigationBarPosition = navigationBarPosition(displayWidth,displayHeight,displayRotation);

private int navigationBarPosition(int displayWidth,int displayHeight,int displayRotation){
  /*	if(mNavigationBarCanMove && displayWidth>displayHeight){
		if(displayRotation == Surface.ROTATION_270){
		   return NAV_BAR_LEFT;	
		}else{
		  return NAN_BAR_REGHT;
		}
	} */
	return NAV_BAR_BOTTOM;
}
           

mtk 6.0作如下修改

//  mNavigationBarOnBottom = (!mNavigationBarCanMove || displayWidth < displayHeight);
	mNavigationBarOnBottom = true;
           

如果不可以的話，在修改

源碼路徑： frameworks\base\packages\SystemUI\src\com\android\systemui\statusbar\phone\NavigationBarView.java

//mRotatedViews[Surface.ROTATION_90] = findViewById(R.id.rot90);
 mRotatedViews[Surface.ROTATION_90] = findViewById(R.id.rot0);
           

其實，8.1就是把mNavigationBar !=null那段相關代碼另寫成一個方法navigationBarPosition(…)

② 不顯示navigationbar

源碼路徑：在device目錄下的system.prop檔案中

# temporary enables NAV bar (soft keys)
qemu.hw.mainkeys=0
           

源碼路徑： framework/base/services/core/java/come/android/server/policy/PhoneWindowManager.java

mHasNavigationBar = res.getBoolean(com.android.R.bool.config_showMavigationBar);
// Allow a system property to override this. Used by emulator.
// See also hasNavigationBar().
String navBarOverride = SystemProperties.get("qemu.hw.mainkeys);
if("1".equals(navBarOverride )){
    mHasNavigationBar = false; 	
}els if("0".equals(navBarOverride )){
    mHasNavigationBar  = true;
}
           

qemu.hw.mainkeys=0存在，qemu.hw.mainkeys=1不存在