防止整个应用程序受到系统字体大小影响的简单方法是使用一个基本活动updateConfiguration。

//in base activity add this code.
public  void adjustFontScale( Configuration configuration) {

    configuration.fontScale = (float) 1.0;
    DisplayMetrics metrics = getResources().getDisplayMetrics();
    WindowManager wm = (WindowManager) getSystemService(WINDOW_SERVICE);
    wm.getDefaultDisplay().getMetrics(metrics);
    metrics.scaledDensity = configuration.fontScale * metrics.density;
    getBaseContext().getResources().updateConfiguration(configuration, metrics);

}

@Override
protected void onCreate(@Nullable Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    adjustFontScale( getResources().getConfiguration());
}

将DP更改为sp，这是android的良好实践 android: textSize = " 18 sp "

防止整个应用程序受到系统字体大小影响的简单方法是使用一个基本活动updateConfiguration。

//in base activity add this code.
public  void adjustFontScale( Configuration configuration) {

    configuration.fontScale = (float) 1.0;
    DisplayMetrics metrics = getResources().getDisplayMetrics();
    WindowManager wm = (WindowManager) getSystemService(WINDOW_SERVICE);
    wm.getDefaultDisplay().getMetrics(metrics);
    metrics.scaledDensity = configuration.fontScale * metrics.density;
    getBaseContext().getResources().updateConfiguration(configuration, metrics);

}

@Override
protected void onCreate(@Nullable Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    adjustFontScale( getResources().getConfiguration());
}

我通常在资源文件中改变大小

<resources>
    <dimen name="siez_1">40px</dimen>
    <dimen name="siez_2">50px</dimen>
    <dimen name="siez_3">60px</dimen>

</resources>

这个解决方案是使用Kotlin，并且不使用已弃用的函数资源

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)
        adjustFontScale(resources.configuration)
    }

    private fun adjustFontScale(configuration: Configuration?) {
        configuration?.let {
            it.fontScale = 1.0F
            val metrics: DisplayMetrics = resources.displayMetrics
            val wm: WindowManager = getSystemService(Context.WINDOW_SERVICE) as WindowManager
            wm.defaultDisplay.getMetrics(metrics)
            metrics.scaledDensity = configuration.fontScale * metrics.density

            baseContext.applicationContext.createConfigurationContext(it)
            baseContext.resources.displayMetrics.setTo(metrics)

        }
    }

观察:这与上面的解决方案相同，但使用了Kotlin

对于kotlin，这对我来说是有效的

priceTextView.textSize = 12f