android 动态创建View

根据需求，有的时候需要进行动态创建布局，也就是xml中的布局需要通过addView()的形式动态的进行创建。如下图：

图中红色部分：如果在xml中，应该是这样的

<LinearLayout                android:id="@+id/ll_facility_info_create"                android:layout_width="match_parent"                android:padding="20dp"                android:orientation="vertical"                android:background="@color/calendar_color_white"                android:layout_height="wrap_content">                <TextView                    android:layout_width="match_parent"                    android:layout_height="40dp"                    android:text="设施服务"                    android:textColor="#000000"                    android:gravity="center_vertical"                    android:textSize="@dimen/font20"/>                                <LinearLayout                    android:orientation="vertical"                    android:layout_width="match_parent"                    android:layout_height="wrap_content">                    <TextView                        android:layout_width="match_parent"                        android:layout_height="30dp"                        android:text="网络"                        android:textColor="#000000"                        android:gravity="center_vertical"/>                    <LinearLayout                        android:layout_width="match_parent"                        android:orientation="horizontal"                        android:layout_height="30dp">                        <TextView                            android:layout_width="0dp"                            android:layout_height="match_parent"                            android:layout_weight="1"                            android:gravity="center_vertical"                            android:text="wifi免费"                            />                        <TextView                            android:layout_width="0dp"                            android:layout_height="match_parent"                            android:layout_weight="1"                            android:gravity="center_vertical"                            android:text="wifi免费"                            />                        <TextView                            android:layout_width="0dp"                            android:layout_height="match_parent"                            android:layout_weight="1"                            android:gravity="center_vertical"                            android:text="wifi免费"                            />                    LinearLayout>                    <LinearLayout                        android:layout_width="match_parent"                        android:orientation="horizontal"                        android:layout_height="30dp">                        <TextView                            android:layout_width="0dp"                            android:layout_height="match_parent"                            android:layout_weight="1"                            android:gravity="center_vertical"                            android:text="wifi免费"                            />                        <TextView                            android:layout_width="0dp"                            android:layout_height="match_parent"                            android:layout_weight="1"                            android:visibility="invisible"                            android:gravity="center_vertical"                            android:text="wifi免费"                            />                        <TextView                            android:layout_width="0dp"                            android:layout_height="match_parent"                            android:layout_weight="1"                            android:visibility="invisible"                            android:gravity="center_vertical"                            android:text="wifi免费"                            />                    LinearLayout>                LinearLayout>            LinearLayout>

而java代码：

//    动态添加设施服务    private View addFacilityLayout(){//        初始化布局参数        LinearLayout.LayoutParams layoutParams = new LinearLayout.LayoutParams(                LinearLayout.LayoutParams.MATCH_PARENT, LinearLayout.LayoutParams.WRAP_CONTENT);//        创建最外层的LinearLayout        LinearLayout linearLayout = new LinearLayout(this);//        设置布局参数        linearLayout.setLayoutParams(layoutParams);//        设置子View的Linearlayout        linearLayout.setOrientation(LinearLayout.VERTICAL);//        第一个子View  TextView//        设置子View的布局        LinearLayout.LayoutParams viewLayoutParams1 = new LinearLayout.LayoutParams(LinearLayout.LayoutParams.MATCH_PARENT,                DensityUtils.dip2px(context,30));//        创建子View TextView        TextView textView = new TextView(this);//        设置内容的位置        textView.setGravity(Gravity.CENTER_VERTICAL);//        设置字体颜色        textView.setTextColor(Color.BLACK);        textView.setText("网络");//        设置布局参数        textView.setLayoutParams(viewLayoutParams1);//        将第一子View添加到最外层的linearlayout中        linearLayout.addView(textView);        for (int i = 0; i < 2; i++) {            //        第二个子View  LinearLayout            LinearLayout.LayoutParams viewLayoutParams2 = new LinearLayout.LayoutParams(LinearLayout.LayoutParams.MATCH_PARENT,                    DensityUtils.dip2px(context,30));            LinearLayout linearLayout1 = new LinearLayout(this);            linearLayout1.setLayoutParams(viewLayoutParams2);//        设置子View的Linearlayout            linearLayout1.setOrientation(LinearLayout.HORIZONTAL);            //        第二个子View  LinearLayout中的TextView            for (int j = 0; j < 3; j++) {//          设置子View的布局                LinearLayout.LayoutParams vp1 = new LinearLayout.LayoutParams(0,DensityUtils.dip2px(context,30),1.0f);//        创建子View TextView                TextView tv1 = new TextView(this);//        设置内容的位置                tv1.setGravity(Gravity.CENTER_VERTICAL);//        设置布局参数                tv1.setLayoutParams(vp1);                //        设置字体颜色                tv1.setText("wifi网络");//                添加子view                linearLayout1.addView(tv1);            }//            添加子View            linearLayout.addView(linearLayout1);        }        return linearLayout;    }

调用：

 LinearLayout ll_facility_info_create = findViewById(R.id.ll_facility_info_create); ll_facility_info_create.addView(addFacilityLayout());

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