Android(安卓)在代码中书写布局（xml）配置
16lz
2021-01-25
1.使用代码编写一个底部选项卡的布局
2.整个页面的容器布局（包含Fargment,分割线，选项卡）
private void initView(Context context) { setBackgroundColor(0xfff6f6f6); FrameLayout frameLayout=new FrameLayout(context);//选项界面容器 frameLayout.setId(FL_ID); View lineView=new View(context);//分割线 lineView.setId(LINE_ID); RelativeLayout.LayoutParams rlParams=new RelativeLayout.LayoutParams(LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT); rlParams.addRule(RelativeLayout.ALIGN_PARENT_TOP); rlParams.addRule(RelativeLayout.ABOVE , LINE_ID); lineView.setBackgroundColor(lineColor); RelativeLayout.LayoutParams rlParams2=new RelativeLayout.LayoutParams(LayoutParams.MATCH_PARENT, DensityUtils.dip2px(context, 1)); rlParams2.addRule(RelativeLayout.ABOVE , TAB_ID); addView(frameLayout, rlParams);//选项界面容器 addView(lineView,rlParams2);//分割线 //选项卡容器 linearLayout=new LinearLayout(context); linearLayout.setBackgroundColor(tabBgColor); linearLayout.setOrientation(LinearLayout.HORIZONTAL); linearLayout.setGravity(Gravity.CENTER_VERTICAL); linearLayout.setId(TAB_ID); tabNum=tabIcos.length; for (int i = 0; i < tabNum; i++) { View view = createIndicator(tabIcos[i], tabtxts[i], tabItemTvColor, "itemTag"+i, "icoTag" + i, "txtTag" + i); view.setOnClickListener(OnClick); if(i== nowTabIndex){//初始化选项卡 changeTab(view, i); } linearLayout.addView(view); } RelativeLayout.LayoutParams rlParams3=new RelativeLayout.LayoutParams(LayoutParams.MATCH_PARENT, DensityUtils.dip2px(context, 50)); rlParams3.addRule(RelativeLayout.ALIGN_PARENT_BOTTOM); addView(linearLayout,rlParams3);//选项卡容器 }3.选项卡条目控件布局（RelaticeLayout中包含图标，小红点，与相应文本）
/** * 创建子选项卡（图片资源，显示文字，文字颜色，条目标记，图标标记，文本标记） */ private View createIndicator(int iconResID, int tvResID, int tvColor, String itemTag, String iconTag, String textTag) { RelativeLayout view = new RelativeLayout(getContext());//单个选项卡的容器 view.setTag(itemTag); view.setGravity(Gravity.CENTER_HORIZONTAL); LinearLayout.LayoutParams relParams=new LinearLayout.LayoutParams(0, LinearLayout.LayoutParams.WRAP_CONTENT,1); view.setLayoutParams(relParams); ImageView iconView = new ImageView(getContext());//创建一个图标控件 iconView.setTag(iconTag); iconView.setId(ICO_ID); RelativeLayout.LayoutParams rlParams5=new RelativeLayout.LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT); rlParams5.addRule(RelativeLayout.BELOW, DTO_ID); iconView.setImageResource(iconResID); ImageView dotView = new ImageView(getContext());//创建一个红点控件 dotView.setId(DTO_ID); RelativeLayout.LayoutParams rlParams3=new RelativeLayout.LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT); rlParams3.addRule(RelativeLayout.RIGHT_OF, ICO_ID); rlParams3.leftMargin=0-12; rlParams3.bottomMargin=0-12; dotView.setImageResource(R.mipmap.red_dot); dotView.setVisibility(INVISIBLE);//默认不显示 TextView textView = new TextView(getContext());//创建一个文本控件 textView.setTag(textTag); textView.setTextColor(tvColor); textView.setTextSize(TypedValue.COMPLEX_UNIT_SP, 12); textView.setText(tvResID); RelativeLayout.LayoutParams rlParams4=new RelativeLayout.LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT); rlParams4.addRule(RelativeLayout.BELOW , ICO_ID); view.addView(iconView, rlParams5); view.addView(textView, rlParams4); view.addView(dotView,rlParams3); return view; }4.参考方法（参考： http://blog.csdn.net/androiddevelop/article/details/8426935）
（1） Margin 配置
android:layout_marginTop android:layout_marginBottom android:layout_marginLeft android:layout_marginRight RelativeLayout.LayoutParams layoutParams = new RelativeLayout.LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT); // 单位是px layoutParams.topMargin = 66; layoutParams.bottomMargin = 66; layoutParams.leftMargin = 66; layoutParams.rightMargin = 66; （2）相对（ID）位置 配置
android:layout_above android:layout_below android:layout_toLeftOf android:layout_toRightOf RelativeLayout.LayoutParams layoutParams = new RelativeLayout.LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT); layoutParams.addRule(RelativeLayout.ABOVE, R.id.viewId); layoutParams.addRule(RelativeLayout.BELOW, R.id.viewId); layoutParams.addRule(RelativeLayout.LEFT_OF, R.id.viewId); layoutParams.addRule(RelativeLayout.RIGHT_OF, R.id.viewId); （3）与边（ID）对齐
android:layout_alignBaseline android:layout_alignTop android:layout_alignBottom android:layout_alignLeft android:layout_alignRight RelativeLayout.LayoutParams layoutParams = new RelativeLayout.LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT); layoutParams.addRule(RelativeLayout.ALIGN_BASELINE, R.id.viewId); layoutParams.addRule(RelativeLayout.ALIGN_TOP, R.id.viewId); layoutParams.addRule(RelativeLayout.ALIGN_BOTTOM, R.id.viewId); layoutParams.addRule(RelativeLayout.ALIGN_LEFT, R.id.viewId); layoutParams.addRule(RelativeLayout.ALIGN_RIGHT, R.id.viewId);（4）对齐父容器边缘
android:layout_alignParentTop android:layout_alignParentBottom android:layout_alignParentLeft android:layout_alignParentRight RelativeLayout.LayoutParams layoutParams = new RelativeLayout.LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT); layoutParams.addRule(RelativeLayout.ALIGN_PARENT_TOP); layoutParams.addRule(RelativeLayout.ALIGN_PARENT_BOTTOM); layoutParams.addRule(RelativeLayout.ALIGN_PARENT_LEFT); layoutParams.addRule(RelativeLayout.ALIGN_PARENT_RIGHT); （5）父容器中居中
android:layout_centerHorizontal android:layout_centerVertical android:layout_centerInParent RelativeLayout.LayoutParams layoutParams = new RelativeLayout.LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT); layoutParams.addRule(RelativeLayout.CENTER_HORIZONTAL); layoutParams.addRule(RelativeLayout.CENTER_VERTICAL); layoutParams.addRule(RelativeLayout.CENTER_IN_PARENT); 更多相关文章
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