Android 自定义字体大小、显示大小、语言（不跟随系统）简单

1.直接上代码，先新建一个工具类

public class ConfigurationUtil {

    private static final String TAG = "ConfigurationUtil";
    public static final float DEFAULT_FONT_SCALE = 1.0f;

    /**
     * 更新configuration
     *
     * @param res 资源
     * @return
     */
    @NonNull
    public static Resources updateConfiguration(Context context, Resources res) {
        Configuration configuration = res.getConfiguration();
        //设置字体大小
        float fontScale = configuration.fontScale;
        if (!SizeUtil.isFloatValueEquals(fontScale, DEFAULT_FONT_SCALE)) {
            Log.i(TAG, "updateConfiguration reset fontScale = " + fontScale);
            configuration.fontScale = DEFAULT_FONT_SCALE;
        }
        //设置dpi
        if (Build.VERSION.SDK_INT > Build.VERSION_CODES.M) {
            int densityDpi = configuration.densityDpi;
            if (densityDpi != DisplayMetrics.DENSITY_DEVICE_STABLE) {
                Log.i(TAG, "updateConfiguration reset densityDpi = " + densityDpi);
                Log.i(TAG, "updateConfiguration DENSITY_DEVICE_STABLE = " + DisplayMetrics.DENSITY_DEVICE_STABLE);
                configuration.densityDpi = DisplayMetrics.DENSITY_DEVICE_STABLE;
            }
        }
        //设置语言
        boolean isEnglish = context == null ? false : MyApplicationUtils.readBooleanConfig(context, GlobalKeys.CURRENT_IS_ENGLISH);
        Locale locale = isEnglish ? Locale.ENGLISH : Locale.SIMPLIFIED_CHINESE;
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
            configuration.setLocale(locale);
        } else {
            configuration.locale = locale;
        }
        res.updateConfiguration(configuration, res.getDisplayMetrics());
        return res;
    }
}

2.再分别在Application和BaseActivity中重写geResources，即可。

    @Override
    public Resources getResources() {
        Resources res = super.getResources();
        return ConfigurationUtil.updateConfiguration(this, res);
    }

之所以要重写Application和Activity的原因如下

截屏2023-04-24 14.06.54.png