安卓java dp和px转换

dp2px

Java

public static float dp2px(float dp) {
    return TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, dp, Resources.getSystem().getDisplayMetrics());
}

px2dp

Java

public static float px2dp(Context context,float px) {
    DisplayMetrics metrics = context.getResources().getDisplayMetrics();
    float pxValue = px;
    float dpValue = pxValue / metrics.density;
    return dpValue;
}