判斷系統(tǒng)是否是深色模式和判斷當(dāng)前app是否是深色模式不一樣。

系統(tǒng)是深色模式，但此app自己代碼單獨(dú)設(shè)置了不是深色模式，
用下列代碼設(shè)置成非深色模式

AppCompatDelegate.setDefaultNightMode(AppCompatDelegate.MODE_NIGHT_NO);

此時(shí)

    UiModeManager uiModeManager = (UiModeManager) context.getSystemService(Context.UI_MODE_SERVICE);
    int uiMode = context.getResources().getConfiguration().uiMode
    Log.d("TEST","uiMode = "+Integer.toHexString(uiMode)+" H");
    Log.d("TEST","getNightMode() = "+Integer.toHexString(uiModeManager.getNightMode() )+" H");
    if ((uiMode & Configuration.UI_MODE_NIGHT_MASK) == Configuration.UI_MODE_NIGHT_YES) {
        Log.d("TEST","night");
    } else {
       Log.d("TEST","not night");
    }
    if (uiModeManager.getNightMode()==UiModeManager.MODE_NIGHT_YES) {
        Log.d("TEST","night");
    } else {
        Log.d("TEST","not night");
    }

log:

D TEST   : uiMode = 11 H
D TEST   : getNightMode() = 2 H
D TEST   : not night
D TEST   : night

結(jié)論
判斷此app應(yīng)用了何種模式

int uiMode = context.getResources().getConfiguration().uiMode
if ((uiMode & Configuration.UI_MODE_NIGHT_MASK) == Configuration.UI_MODE_NIGHT_YES){}

判斷系統(tǒng)應(yīng)用了何種模式

UiModeManager uiModeManager = (UiModeManager) context.getSystemService(Context.UI_MODE_SERVICE);
if (uiModeManager.getNightMode()==UiModeManager.MODE_NIGHT_YES) {}