android 使用相对布局制作动态视图时面临的问题

qyswt5oh  于 2023-06-27  发布在  Android
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我正在使用相对布局来动态构建视图/网格...
例如：如果有1个用户，
[ grid with users 1 ] 1
如果有2个用户，
[ grid with users 2 ] 2
如果有3个用户，
[ grid with user 3 ] 3
如果有4个用户，则上面2个，下面2个
如果有5个，则[grid with user 5] 4
如果有6个。[ grid with user 6 ] 5
我的准则是

  1. private RelativeLayout.LayoutParams[] getgrid(int size) {
  3.   int width = Math.max(getMeasuredWidth(),getMeasuredHeight());
  4.     int height = Math.min(getMeasuredWidth(),getMeasuredHeight());
  6.     RelativeLayout.LayoutParams[] array =
  7.             new RelativeLayout.LayoutParams[size];
  9.     for (int i = 0; i < size; i++) {
  10.         if (i == 0) {
  11.             array[0] = new RelativeLayout.LayoutParams(
  12.                     LayoutParams.MATCH_PARENT,
  13.                     LayoutParams.MATCH_PARENT);
  14.             array[0].addRule(RelativeLayout.ALIGN_PARENT_TOP, RelativeLayout.TRUE);
  15.         } else if (i == 1) {
  16.             array[1] = new RelativeLayout.LayoutParams(width / 2, height);
  17.             array[0].width = array[1].width;
  18.             array[1].addRule(RelativeLayout.RIGHT_OF, mUserViewList.get(mUidList.get(0)).getId());
  19.             array[1].addRule(RelativeLayout.ALIGN_PARENT_TOP, RelativeLayout.TRUE);
  20.           //  array[1].addRule(RelativeLayout.ALIGN_PARENT_BOTTOM,RelativeLayout.TRUE);
  21.         } else if (i == 2) {
  22.             array[i] = new RelativeLayout.LayoutParams(width / 3, height);
  23.             array[1].width = array[i].width;
  24.             array[0].width = array[i].width;
  25.             //array[i].addRule(RelativeLayout.ALIGN_PARENT_RIGHT, RelativeLayout.TRUE);
  26.             array[i].addRule(RelativeLayout.RIGHT_OF, mUserViewList.get(mUidList.get(1)).getId());
  27.         } else if (i == 3) {
  28.             array[i] = new RelativeLayout.LayoutParams(width / 2, height / 2);
  29.             array[0].width = array[i].width;
  30.             array[1].width = array[i].width;
  31.             array[i - 1].width = array[i].width;
  32.             array[0].height = array[i].height;
  33.             array[1].height = array[i].height;
  34.             array[i - 1].height = array[i].height;
  35.             array[i - 1].addRule(RelativeLayout.ALIGN_PARENT_LEFT, RelativeLayout.TRUE);
  36.             array[i].addRule(RelativeLayout.ALIGN_PARENT_RIGHT, 0);
  37.             array[i - 1].addRule(RelativeLayout.BELOW, mUserViewList.get(mUidList.get(0)).getId());
  38.             array[i].addRule(RelativeLayout.BELOW, mUserViewList.get(mUidList.get(1)).getId());
  39.             array[i].addRule(RelativeLayout.RIGHT_OF, mUserViewList.get(mUidList.get(i - 1)).getId());
  40.         } else if (i == 4) {
  41.             array[i] = new RelativeLayout.LayoutParams(width / 3, height / 2);
  42.             array[0].width = array[i].width;
  43.             array[1].width = array[i].width;
  44.             array[2].width = array[i].width;
  45.             array[3].width = array[i].width;
  46.             array[0].setMargins(width / 6, 0, 0, 0);
  47.             array[i].addRule(RelativeLayout.RIGHT_OF, mUserViewList.get(mUidList.get(i - 1)).getId());
  48.             array[i].addRule(RelativeLayout.ALIGN_PARENT_BOTTOM, RelativeLayout.TRUE);
  49.         } else if (i == 5) {
  50.             array[i] = new RelativeLayout.LayoutParams(width / 3, height / 2);
  51.             array[0].setMargins(0, 0, 0, 0);
  52.             array[i].addRule(RelativeLayout.RIGHT_OF, mUserViewList.get(mUidList.get(1)).getId());
  53.             array[i].addRule(RelativeLayout.ALIGN_PARENT_TOP, RelativeLayout.TRUE);
  55.         }
  56.     }
  58.      return array;
  59. }

问题是有另一个视图的权利，除了相对布局，所以基本上它没有得到平等的划分和扭曲，以及（扭曲意味着一些网格没有覆盖整个高度）
请参考：-- [issue with 6] 6
[issue with 3] 7等
请帮助我提前感谢

android

1条答案

按热度按时间
sf6xfgos

sf6xfgos1#


为了使动态视图如您所见，我编写了以下代码：
注意：5视图有一个例外，因为它需要 Package 在另一个视图中（在我的例子中，线性布局）。
当前，相对布局的宽度和高度固定如下：

  1. android:layout_width="match_parent"
  2.     android:layout_height="200dp"

整个活动代码：

  1. public class MainActivity2 extends AppCompatActivity {
  2.     RelativeLayout relativeLayout;
  3.     List<UserView> mUserViewList;
  4.     List<Integer> mUidList;
  6.     @Override
  7.     protected void onCreate(Bundle savedInstanceState) {
  8.         super.onCreate(savedInstanceState);
  9.         setContentView(R.layout.activity_main2);
  11.          relativeLayout = findViewById(R.id.relativeLayout);
  14.         mUserViewList = new ArrayList<>();
  15.         mUidList = new ArrayList<>();
  16.         int size = 5;
  18.         RelativeLayout.LayoutParams[] array = getgrid2(size);
  20.         for (int i = 0; i < size; i++) {
  21.             //createing user view and addding in view list
  22.             UserView userView = new UserView(this);
  23.             mUserViewList.add(userView);
  25.             //setting id and addint to id list
  26.             userView.setId(i);
  27.             mUidList.add(i);
  29.             //settting text to user view
  30.             userView.setTextView("User " + (i+1));
  32.             if (array[i]==null)
  33.                 continue;
  34.             //setting layout
  35.             mUserViewList.get(i).setLayoutParams(array[i]);
  36.             //adding to views
  37.             if (i==4){
  39.                 relativeLayout.addView(exptionalMethodFor5view());
  40.             }
  41.             relativeLayout.addView(mUserViewList.get(i));
  42.         }
  43.     }
  45.     private RelativeLayout.LayoutParams[] getgrid2(int size) {
  47. //        int width = Math.max(relativeLayout.getMeasuredWidth(),relativeLayout.getMeasuredHeight());
  48. //        int height = Math.min(relativeLayout.getMeasuredWidth(),relativeLayout.getMeasuredHeight());
  50.          int width = Resources.getSystem().getDisplayMetrics().widthPixels;
  51.          int height =dpToPx(200);
  53.         RelativeLayout.LayoutParams[] array =
  54.                 new RelativeLayout.LayoutParams[size];
  55.         switch (size){
  56.             case 1: {
  57.                 array[0] = new RelativeLayout.LayoutParams(
  58.                         RelativeLayout.LayoutParams.MATCH_PARENT,
  59.                         RelativeLayout.LayoutParams.MATCH_PARENT);
  60.                 array[0].addRule(RelativeLayout.ALIGN_PARENT_TOP, RelativeLayout.TRUE);
  61.                 break;
  62.             }
  63.             case 2:{
  64.                 array[0] = new RelativeLayout.LayoutParams(
  65.                         width/2,
  66.                         RelativeLayout.LayoutParams.MATCH_PARENT );
  67.                 array[0].addRule(RelativeLayout.ALIGN_PARENT_TOP, RelativeLayout.TRUE);
  68.                 array[0].addRule(RelativeLayout.ALIGN_PARENT_START, RelativeLayout.TRUE);
  70.                 array[1] = new RelativeLayout.LayoutParams(
  71.                         width/2,
  72.                         ViewGroup.LayoutParams.MATCH_PARENT);
  73.                 array[1].addRule(RelativeLayout.ALIGN_PARENT_TOP, RelativeLayout.TRUE);
  74.                 array[1].addRule(RelativeLayout.ALIGN_PARENT_END, RelativeLayout.TRUE);
  75.                 break;
  77.             }
  78.             case 3: {
  79.                 array[0] = new RelativeLayout.LayoutParams(
  80.                         width/3,
  81.                         RelativeLayout.LayoutParams.MATCH_PARENT );
  82.                 array[0].addRule(RelativeLayout.ALIGN_PARENT_TOP, RelativeLayout.TRUE);
  83.                 array[0].addRule(RelativeLayout.ALIGN_PARENT_START, RelativeLayout.TRUE);
  85.                 array[1] = new RelativeLayout.LayoutParams(
  86.                         width/3,
  87.                         ViewGroup.LayoutParams.MATCH_PARENT);
  88.                 array[1].addRule(RelativeLayout.ALIGN_PARENT_TOP, RelativeLayout.TRUE);
  89.                 array[1].addRule(RelativeLayout.ALIGN_PARENT_END, RelativeLayout.TRUE);
  91.                 array[2] = new RelativeLayout.LayoutParams(
  92.                         width/3,
  93.                         ViewGroup.LayoutParams.MATCH_PARENT);
  94.                 array[2].addRule(RelativeLayout.CENTER_IN_PARENT, RelativeLayout.TRUE);
  95.                 break;
  96.             }
  97.             case 4: {
  98.                 array[0] = new RelativeLayout.LayoutParams(
  99.                         width/2,
  100.                         height/2 );
  101.                 array[0].addRule(RelativeLayout.ALIGN_PARENT_TOP, RelativeLayout.TRUE);
  102.                 array[0].addRule(RelativeLayout.ALIGN_PARENT_START, RelativeLayout.TRUE);
  104.                 array[1] = new RelativeLayout.LayoutParams(
  105.                         width/2,
  106.                         height/2);
  107.                 array[1].addRule(RelativeLayout.ALIGN_PARENT_TOP, RelativeLayout.TRUE);
  108.                 array[1].addRule(RelativeLayout.ALIGN_PARENT_END, RelativeLayout.TRUE);
  110.                 array[2] = new RelativeLayout.LayoutParams(
  111.                         width/2,
  112.                         height/2);
  113.                 array[2].addRule(RelativeLayout.ALIGN_PARENT_BOTTOM, RelativeLayout.TRUE);
  115.                 array[3] = new RelativeLayout.LayoutParams(
  116.                         width/2,
  117.                         height/2);
  118.                 array[3].addRule(RelativeLayout.ALIGN_PARENT_BOTTOM, RelativeLayout.TRUE);
  119.                 array[3].addRule(RelativeLayout.ALIGN_PARENT_END, RelativeLayout.TRUE);
  120.                 break;
  121.             }
  122.             case 5: {
  123. //                array[0] = new RelativeLayout.LayoutParams(
  124. //                        width/3,
  125. //                        height/2 );
  126. //                array[0].addRule(RelativeLayout.ALIGN_PARENT_TOP, RelativeLayout.TRUE);
  127. //                array[0].addRule(RelativeLayout.ALIGN_PARENT_START, RelativeLayout.TRUE);
  129. //                array[1] = new RelativeLayout.LayoutParams(
  130. //                        width/3,
  131. //                        height/2);
  132.                 //top right
  133. //                array[1].addRule(RelativeLayout.ALIGN_PARENT_TOP, RelativeLayout.TRUE);
  134. //                array[1].addRule(RelativeLayout.ALIGN_PARENT_END, RelativeLayout.TRUE);
  136.                 array[2] = new RelativeLayout.LayoutParams(
  137.                         width/3,
  138.                         height/2);
  139.                 array[2].addRule(RelativeLayout.ALIGN_PARENT_BOTTOM, RelativeLayout.TRUE);
  141.                 array[3] = new RelativeLayout.LayoutParams(
  142.                         width/3,
  143.                         height/2);
  144.                 array[3].addRule(RelativeLayout.ALIGN_PARENT_BOTTOM, RelativeLayout.TRUE);
  145.                 array[3].addRule(RelativeLayout.ALIGN_PARENT_END, RelativeLayout.TRUE);
  147.                 array[4] = new RelativeLayout.LayoutParams(
  148.                         width/3,
  149.                         height/2);
  150.                 array[4].addRule(RelativeLayout.ALIGN_PARENT_BOTTOM, RelativeLayout.TRUE);
  151.                 array[4].addRule(RelativeLayout.CENTER_HORIZONTAL, RelativeLayout.TRUE);
  152.                 break;
  153.             }
  154.             case 6: {
  155.                 array[0] = new RelativeLayout.LayoutParams(
  156.                         width/3,
  157.                         height/2 );
  158.                 array[0].addRule(RelativeLayout.ALIGN_PARENT_TOP, RelativeLayout.TRUE);
  159.                 array[0].addRule(RelativeLayout.ALIGN_PARENT_START, RelativeLayout.TRUE);
  161.                 array[1] = new RelativeLayout.LayoutParams(
  162.                         width/3,
  163.                         height/2);
  164.                 array[1].addRule(RelativeLayout.ALIGN_PARENT_TOP, RelativeLayout.TRUE);
  165.                 array[1].addRule(RelativeLayout.ALIGN_PARENT_END, RelativeLayout.TRUE);
  167.                 array[2] = new RelativeLayout.LayoutParams(
  168.                         width/3,
  169.                         height/2);
  170.                 array[2].addRule(RelativeLayout.ALIGN_PARENT_BOTTOM, RelativeLayout.TRUE);
  172.                 array[3] = new RelativeLayout.LayoutParams(
  173.                         width/3,
  174.                         height/2);
  175.                 array[3].addRule(RelativeLayout.ALIGN_PARENT_BOTTOM, RelativeLayout.TRUE);
  176.                 array[3].addRule(RelativeLayout.ALIGN_PARENT_END, RelativeLayout.TRUE);
  178.                 array[4] = new RelativeLayout.LayoutParams(
  179.                         width/3,
  180.                         height/2);
  181.                 array[4].addRule(RelativeLayout.CENTER_HORIZONTAL, RelativeLayout.TRUE);
  183.                 array[5] = new RelativeLayout.LayoutParams(
  184.                         width/3,
  185.                         height/2);
  186.                 array[5].addRule(RelativeLayout.ALIGN_PARENT_BOTTOM, RelativeLayout.TRUE);
  187.                 array[5].addRule(RelativeLayout.CENTER_HORIZONTAL, RelativeLayout.TRUE);
  188.                 break;
  189.             }
  191.             default:{
  192.                 array[0] = new RelativeLayout.LayoutParams(
  193.                         width/2,
  194.                         ViewGroup.LayoutParams.MATCH_PARENT);
  195.                 array[0].addRule(RelativeLayout.ALIGN_PARENT_TOP, RelativeLayout.TRUE);
  196.                 array[0].addRule(RelativeLayout.ALIGN_PARENT_START, RelativeLayout.TRUE);
  198.                 array[1] = new RelativeLayout.LayoutParams(
  199.                         width/2,
  200.                         ViewGroup.LayoutParams.MATCH_PARENT);
  201.                 array[1].addRule(RelativeLayout.ALIGN_PARENT_TOP, RelativeLayout.TRUE);
  202.                 array[1].addRule(RelativeLayout.ALIGN_PARENT_END, RelativeLayout.TRUE);
  203.                 break;
  204.             }
  205.         }
  206.         return array;
  209.     }
  211.     private LinearLayout exptionalMethodFor5view(){
  212.         LinearLayout linearLayout = new LinearLayout(this);
  213.         LinearLayout.LayoutParams layoutParams = new LinearLayout.LayoutParams(
  214.                 LinearLayout.LayoutParams.MATCH_PARENT,
  215.                 LinearLayout.LayoutParams.WRAP_CONTENT);
  217.         linearLayout.setOrientation(LinearLayout.HORIZONTAL);
  218.         linearLayout.setGravity(Gravity.CENTER);
  220.         linearLayout.setLayoutParams(layoutParams);
  222.         UserView newUserview1 = new UserView(this);
  223.         newUserview1.setLayoutParams(new LinearLayout.LayoutParams(
  224.                 (Resources.getSystem().getDisplayMetrics().widthPixels)/3,
  225.                 dpToPx(200)/2));
  227.         UserView newUserview2 = new UserView(this);
  228.         newUserview2.setLayoutParams(new LinearLayout.LayoutParams(
  229.                 (Resources.getSystem().getDisplayMetrics().widthPixels)/3,
  230.                 dpToPx(200)/2));
  232.         linearLayout.addView(newUserview1);
  233.         linearLayout.addView(newUserview2);
  234.         return linearLayout;
  235.     }
  237.     public static int dpToPx(float dp) {
  238.         float density = Resources.getSystem().getDisplayMetrics().density;
  239.         return Math.round(dp * density);
  240.     }
  241. }
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