android studio屏幕尺寸dp,常见工具:dp与px互转,屏幕宽度与高度获取
publicclassDisplayUtils{/***将px值转换为dp值*/publicstaticintpx2dp(Contextcontext,floatpxValue){finalfloatscale=context.getResources().getDisplayMetrics().density;return(int)(pxValue/scal...
public class DisplayUtils {
/**
* 将px值转换为dp值
*/
public static int px2dp(Context context, float pxValue) {
final float scale = context.getResources().getDisplayMetrics().density;
return (int) (pxValue / scale + 0.5f);
}
/**
* 将dp值转换为px值
*/
public static int dp2px(Context context, float dpValue) {
final float scale = context.getResources().getDisplayMetrics().density;
return (int) (dpValue * scale + 0.5f);
}
/**
* 获取屏幕宽度
*/
public static int getScreenWidthPixels(Activity context) {
DisplayMetrics metric = new DisplayMetrics();
context.getWindowManager().getDefaultDisplay().getMetrics(metric);
return metric.widthPixels;
}
/**
* 获取屏幕高度
*/
public static int getScreenHeightPixels(Activity context) {
DisplayMetrics metric = new DisplayMetrics();
context.getWindowManager().getDefaultDisplay().getMetrics(metric);
return metric.heightPixels;
}
}
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