我试图在现有的许多不同屏幕上找到正确的字体大小,我遇到了很大的麻烦. 目前我有一个名为getCorrectFontSizeForScreen的辅助函数. export function getCorrectFontSizeForScreen(currentFontSize){ const maxFo
目前我有一个名为getCorrectFontSizeForScreen的辅助函数.
export function getCorrectFontSizeForScreen(currentFontSize){ const maxFontDifferFactor = 6; //the maximum pixels of font size we can go up or if(Platform.OS === 'ios'){ //iOS part let devRatio = PixelRatio.get(); this.fontFactor = (((screenWidth*devRatio)/320)*0.55+((screenHeight*devRatio)/640)*0.45) if(this.fontFactor<=1){ return currentFontSize-float2int(maxFontDifferFactor*0.3); }else if((this.fontFactor>=1) && (this.fontFactor<=1.6)){ return currentFontSize-float2int(maxFontDifferFactor*0.1); }else if((this.fontFactor>=1.6) && (this.fontFactor<=2)){ return currentFontSize; }else if((this.fontFactor>=2) && (this.fontFactor<=3)){ return currentFontSize+float2int(maxFontDifferFactor*0.85); }else if (this.fontFactor>=3){ return currentFontSize+float2int(maxFontDifferFactor); } }else{ //Android part let scale = screenWidth/375; //got this from the f8 facebook project this.fontFactor = (((screenWidth)/320)*0.65+((screenHeight)/640)*0.35) if(this.fontFactor<=1){ //for 0.8 until 1.0 use 8 (800x600 phone this.fontFactor == 0.961) return float2int(scale * (currentFontSize+8)); }else if((this.fontFactor>=1) && (this.fontFactor<=1.6)){ //for 1.0 until 1.5 use 4 (NEXUS 5 this.fontFactor == 1.055) return float2int(scale * (currentFontSize+4)); } else{ return float2int(scale * (currentFontSize+2)); } } function float2int (value) { return value | 0; //Converts a float to an integer }
然后规范化字体大小,如下所示:
const styles = StyleSheet.create({ aText:{ color: 'white', fontFamily: 'Whatever', fontSize: getCorrectFontSizeForScreen(14), } });
它似乎在iOS上运行良好但在Android上运行得不是很好……我想我需要更多的fontFactor组才能通过反复试验形成这个列表!
但我想知道,有更好的方法吗?
其他人对此有何看法?
谢谢!
React Native中的大小基于点,而不是像素,因此您不需要这么复杂的逻辑来根据设备dpi更改字体大小.相反,如果要撤消自动应用的缩放,则应将像素大小除以像素比率.