自定义View-1-动态添加view

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效果图

//在代码中实现添加布局

这里写图片描述

布局文件

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:orientation="vertical"    android:layout_width="match_parent"    android:id="@+id/ll_add_context"    android:background="#424242"    android:layout_height="match_parent">    <TextView        android:layout_width="100dp"        android:layout_height="100dp"        android:background="#566667"        android:gravity="center"        android:text="FIRST"/></LinearLayout>

主页面代码

public class AFragment extends Fragment {    @Nullable    @Override      public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {        View view =inflater.inflate(R.layout.fragment_a,null);        LinearLayout linearLayout=(LinearLayout)view.findViewById(R.id.ll_add_context);        linearLayout.setOrientation(LinearLayout.VERTICAL);        TextView textView=new TextView(getActivity());        textView.setBackgroundColor(getResources().getColor(R.color.colorAccent));        textView.setText("I am new text");        linearLayout.addView(textView);//添加view        LinearLayout.LayoutParams params=new LinearLayout.LayoutParams(200,200);        linearLayout.getChildAt(1).setLayoutParams(params);//父控件给子view设置布局参数        TextView button=new TextView(getActivity());        button.setText("I am the button");        button.setBackgroundColor(getResources().getColor(R.color.colorPrimary));        linearLayout.addView(button);//添加view        RelativeLayout relativeLayout=new RelativeLayout(getActivity());        LinearLayout.LayoutParams params2=new LinearLayout.LayoutParams(400,400);        relativeLayout.setLayoutParams(params2);        relativeLayout.setBackgroundColor(getResources().getColor(R.color.green));        RelativeLayout.LayoutParams params3=new RelativeLayout.LayoutParams(150,250);        TextView textView2=new TextView(getActivity());        textView2.setId(Integer.valueOf(1));//设置viewID        textView2.setLayoutParams(params3);//view直接设置布局参数        textView2.setBackgroundColor(getResources().getColor(R.color.colorAccent));        textView2.setText("I am new text 2");        relativeLayout.addView(textView2);        RelativeLayout.LayoutParams params4=new RelativeLayout.LayoutParams(150,150);        params4.addRule(RelativeLayout.BELOW,textView2.getId());//父控件为RelativeLayout时，设置布局属性的规则        TextView button2=new TextView(getActivity());        button2.setText("I am the button 2");        button2.setBackgroundColor(getResources().getColor(R.color.colorPrimary));        relativeLayout.addView(button2);        relativeLayout.getChildAt(1).setLayoutParams(params4);        linearLayout.addView(relativeLayout);        return view;    }}

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