[置顶] 一个类搞定Android适配!!

Android之屏幕适配问题，有需要的朋友可以参考下。

Android设备繁多，屏幕标准不一，更有让人头疼的定制rom，开发中有时候真的很蛋疼，这点上就没IOS好，下面我分享下我在项目中是如何适配的：

我们UI只切了一套图，IOS、Android组共用这一套，是按6plus切的，没办法，项目多，而UI就一个，不会像书上说的那样几个drawable目录放图，否则做UI的妹子要累死，具体方法很简单，只需要这样一个类就可以：

package com.....config;import android.content.Context;import android.util.DisplayMetrics;import android.view.View;import android.widget.FrameLayout;import android.widget.LinearLayout;import android.widget.RelativeLayout;/** * @author wfy * */public class SceenMannage {private static int STANDARD_WIDTH = 720;// 标准宽的像素private static int STANDARD_HEIGHT = 1280;// 标准高的像素private float WIDTH_RATE;private float HEIGHT_RATE;private float ZOOM_RATE;private float CHANGE_RATE; // dip转px转换比例/**字体缩放比例 */private float fontScale;/** 屏幕密度 */          public float DENSITY;          /** 每英寸像素数 */          public int DENSITYDPI;        /**屏幕高度像素*/        public int height;     public SceenMannage(Context context) {init(context);}private void init(Context context) {DisplayMetrics metrics = context.getResources().getDisplayMetrics();int large = (metrics.widthPixels > metrics.heightPixels) ? metrics.widthPixels: metrics.heightPixels;int small = (metrics.widthPixels < metrics.heightPixels) ? metrics.widthPixels: metrics.heightPixels;fontScale =metrics.scaledDensity;  DENSITYDPI = metrics.densityDpi;DENSITY = metrics.density;WIDTH_RATE = small * 1f / STANDARD_WIDTH;HEIGHT_RATE = large * 1f / STANDARD_HEIGHT;ZOOM_RATE = (WIDTH_RATE < HEIGHT_RATE) ? WIDTH_RATE : HEIGHT_RATE;CHANGE_RATE= DENSITYDPI * 1f / 160;}/** * 关于相对布局适配 不用适配传值为“0” *  * @param view *            适配的对象 * @param width *            宽 dip * @param hight *            高 dip * @param topMargin *            顶距离 dip * @param leftMargin *            左距离 dip * @param rightMargin *            右距离 dip * @param buttomMargin *            底距离 dip */public void LinearLayoutParams(View view, float width, float hight,float topMargin, float leftMargin, float rightMargin,float buttomMargin) {LinearLayout.LayoutParams params = (LinearLayout.LayoutParams) view.getLayoutParams();if (width != 0) {params.width = (int) (width * ZOOM_RATE);}if (hight != 0) {params.height = (int) (hight * ZOOM_RATE);}if (topMargin != 0) {params.topMargin = (int) (topMargin * HEIGHT_RATE);}if (buttomMargin != 0) {params.bottomMargin = (int) (buttomMargin * HEIGHT_RATE);}if (leftMargin != 0) {params.leftMargin = (int) (leftMargin * WIDTH_RATE);}if (rightMargin != 0) {params.rightMargin = (int) (rightMargin * WIDTH_RATE);}}/** * 关于相对布局适配 不用适配传值为“0” *  * @param view *            适配的对象 * @param width *            宽 dip * @param hight *            高 dip * @param topMargin *            顶距离 dip * @param leftMargin *            左距离 dip * @param rightMargin *            右距离 dip * @param buttomMargin *            底距离 dip */public void RelativeLayoutParams(View view, float wight, float hight,float topMargin, float leftMargin, float rightMargin,float buttomMargin) {    RelativeLayout.LayoutParams params = (RelativeLayout.LayoutParams) view.getLayoutParams();if (wight != 0) {params.width = (int) (wight * ZOOM_RATE);}if (hight != 0) {params.height = (int) (hight * ZOOM_RATE);}if (topMargin != 0) {params.topMargin = (int) (topMargin * HEIGHT_RATE);}if (buttomMargin != 0) {params.bottomMargin = (int) (buttomMargin * HEIGHT_RATE);}if (leftMargin != 0) {params.leftMargin = (int) (leftMargin * WIDTH_RATE);}if (rightMargin != 0) {params.rightMargin = (int) (rightMargin * WIDTH_RATE);}}/** * 关于相对布局适配 不用适配传值为“0” *  * @param view *            适配的对象 * @param width *            宽 dip * @param hight *            高 dip * @param topMargin *            顶距离 dip * @param leftMargin *            左距离 dip * @param rightMargin *            右距离 dip * @param buttomMargin *            底距离 dip */public void FragmentLayoutParams(View view, float wight, float hight,float topMargin, float leftMargin, float rightMargin,float buttomMargin) {FrameLayout.LayoutParams params = (FrameLayout.LayoutParams) view.getLayoutParams();if (wight != 0) {params.width = (int) (wight * ZOOM_RATE);}if (hight != 0) {params.height = (int) (hight * ZOOM_RATE);}if (topMargin != 0) {params.topMargin = (int) (topMargin * HEIGHT_RATE);}if (buttomMargin != 0) {params.bottomMargin = (int) (buttomMargin * HEIGHT_RATE);}if (leftMargin != 0) {params.leftMargin = (int) (leftMargin * WIDTH_RATE);}if (rightMargin != 0) {params.rightMargin = (int) (rightMargin * WIDTH_RATE);}}/** * 11.30 新增：返回ZOOM_RATE 无视父布局类型设置宽高 * @param view * @param wight * @param hight */public float getRate(){return ZOOM_RATE;}/** * 水平方向的适配 * @param width px * @return */public int changeHorizontal (int width) {return (int) (width * WIDTH_RATE);}/** * 垂直方向的适配 * @param hight * @return */public int changeVertical(int hight) {return (int) (hight * HEIGHT_RATE);}/** * 根据手机的分辨率从 dp 的单位 转成为 px(像素)    * @param dpValue * @return px(像素)  */    public int dip2px(float dpValue) {          return (int) (dpValue * CHANGE_RATE + 0.5f);      }        /**     * 根据手机的分辨率从 px(像素) 的单位 转成为 dp       * @param pxValue     * @return dp     */    public int px2dip(float pxValue) {          return (int) (pxValue / CHANGE_RATE + 0.5f);      }  /**      * 将px值转换为sp值，保证文字大小不变      * @param pxValue      * @return      */      public int px2sp(float pxValue) {          return (int) (pxValue / fontScale + 0.5f);      }        /**     * 将sp值转换为px值，保证文字大小不变     * @param spValue     * @return     */     public int sp2px(float spValue) {         return (int) (spValue * fontScale + 0.5f);     }     /**     * 获取屏幕高的像素     * @param context     * @return     */    public int getHeight(Context context){     DisplayMetrics metrics = context.getResources().getDisplayMetrics();     height=metrics.heightPixels;     return height;     }        /**     *  11.27 新增     * 根据手机的分辨率从 dp 的单位 转成为 px(像素)      */      public static int dip2px(Context context, float dpValue) {          final float scale = context.getResources().getDisplayMetrics().density;          return (int) (dpValue * scale + 0.5f);      }  }

注释写的还算详细，没什么说的，就是对Android中单位换算的方法做了再次封装，便于使用。

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