鍦ˋndroid涓紝LayoutParams鐢ㄤ簬璁剧疆View鍦ㄥ竷灞€涓殑浣嶇疆鍜屽ぇ灏忋€侺ayoutParams鏄瘡涓猇iewGroup鐨勫唴閮ㄧ被锛岀敤浜庤缃叾瀛怴iew鐨勫竷灞€鍙傛暟銆?/p>

LayoutParams鐨勪娇鐢ㄦ楠ゅ涓嬶細

1. 鑾峰彇瑕佽缃竷灞€鍙傛暟鐨刅iew鐨勭埗ViewGroup锛屼緥濡侺inearLayout銆丷elativeLayout绛夈€?/p>

2. 鍒涘缓涓€涓狶ayoutParams瀵硅薄锛屼緥濡侺inearLayout.LayoutParams銆丷elativeLayout.LayoutParams绛夛紝鏋勯€犲嚱鏁颁腑浼犲叆瀹藉害鍜岄珮搴︾殑鍙傛暟銆?/p>

3. 璁剧疆LayoutParams鐨勫叾浠栧睘鎬э紝渚嬪璁剧疆View鍦ㄧ埗ViewGroup涓殑浣嶇疆銆佽竟璺濈瓑銆?/p>

4. 璋冪敤View鐨剆etLayoutParams鏂规硶锛屽皢LayoutParams瀵硅薄璁剧疆缁橵iew銆?/p>

浠ヤ笅鏄竴涓畝鍗曠殑绀轰緥浠ｇ爜锛?/p>

// 鑾峰彇鐖禫iewGroup
LinearLayout parentLayout = findViewById(R.id.parent_layout);
// 鍒涘缓LayoutParams瀵硅薄锛岃缃搴﹀拰楂樺害
LinearLayout.LayoutParams layoutParams = new LinearLayout.LayoutParams(
LinearLayout.LayoutParams.MATCH_PARENT,
LinearLayout.LayoutParams.WRAP_CONTENT);
// 璁剧疆鍏朵粬灞炴€э紝渚嬪璁剧疆View鍦ㄧ埗ViewGroup涓殑浣嶇疆銆佽竟璺濈瓑
layoutParams.gravity = Gravity.CENTER_HORIZONTAL;
layoutParams.setMargins(0, 20, 0, 0);
// 灏哃ayoutParams瀵硅薄璁剧疆缁橵iew
View childView = findViewById(R.id.child_view);
childView.setLayoutParams(layoutParams);

鍦ㄤ笂杩颁唬鐮佷腑锛屾垜浠幏鍙栦簡涓€涓狶inearLayout浣滀负鐖禫iewGroup锛岀劧鍚庡垱寤轰簡涓€涓狶inearLayout.LayoutParams瀵硅薄锛屽苟璁剧疆浜嗗搴︿负MATCH_PARENT锛岄珮搴︿负WRAP_CONTENT銆傜劧鍚庯紝鎴戜滑璁剧疆浜哣iew鍦ㄧ埗ViewGroup涓殑浣嶇疆涓烘按骞冲眳涓紝涓婅竟璺濅负20dp銆傛渶鍚庯紝鎴戜滑灏哃ayoutParams瀵硅薄璁剧疆缁欎簡涓€涓瓙View銆?/p>

娉ㄦ剰锛氫笉鍚岀殑ViewGroup鍙兘鏈変笉鍚岀殑LayoutParams绫伙紝渚嬪LinearLayout瀵瑰簲鐨勬槸LinearLayout.LayoutParams锛孯elativeLayout瀵瑰簲鐨勬槸RelativeLayout.LayoutParams绛夈€傝鏍规嵁瀹為檯鐨勬儏鍐甸€夋嫨姝ｇ‘鐨凩ayoutParams绫汇€?/p>