强制字体不随着系统改变而改变

在Application中重写onConfigurationChanged 强制字体不随着系统改变而改变(微信也是这么干的)

public class App extends Application {
    @Override
    public void onConfigurationChanged(Configuration newConfig) {
        if (newConfig.fontScale != 1) {
            getResources();
        }
        super.onConfigurationChanged(newConfig);
    }

    @Override
    public Resources getResources() {
        Resources res = super.getResources();
        if (res.getConfiguration().fontScale != 1) {
            //非默认值 
            Configuration newConfig = new Configuration();
            newConfig.setToDefaults();  //设置默认 
            res.updateConfiguration(newConfig, res.getDisplayMetrics());
            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR1) {
                createConfigurationContext(newConfig);
            } else {
                res.updateConfiguration(newConfig, res.getDisplayMetrics());
            }
        }
        return res;
    }
}