动态加载控件并在外部得到控件

来源：互联网发布：c语言程序编程编辑：程序博客网时间：2024/06/08 01:21

在xml中写好的布局是这样的：

布局文件（只截取了一分部）：

<LinearLayout    android:layout_width="match_parent"    android:layout_height="wrap_content"    android:background="@drawable/btn_settings_mid"    android:gravity="center"    android:id="@+id/new_add_layout"    android:orientation="vertical">    <TextView        android:id="@+id/apply_use_type_img"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:contentDescription="@null"        android:layout_gravity="center_vertical"        android:paddingLeft="8dp"        android:text="选择用车类型和数量："        android:textColor="@android:color/black"        android:textSize="@dimen/tv_size_apply_car"        android:src="@drawable/car_easy_usedays" /></LinearLayout>

然后在Activity中请求后台，得到后台的数据中，才开始加载控件。达到下面的效果：

/** * 动态加载车辆 */public void dynamicView() {    List<Integer> carNumList;    List<String> carTypeList;    List<Integer> setCarNum;    LinearLayout lin;    LinearLayout new_add_layout = null;    carNumList = lYGUserInfo.getCarnum();    carTypeList = lYGUserInfo.getCartype();    setCarNum = new ArrayList<>();    int carSize = carTypeList.size();    lin = new LinearLayout(this);    lin.setOrientation(LinearLayout.VERTICAL);    LinearLayout.LayoutParams LP_FW = new LinearLayout.LayoutParams(            LinearLayout.LayoutParams.WRAP_CONTENT, LinearLayout.LayoutParams.WRAP_CONTENT);    RelativeLayout newSingleRL;    for (int i = 0; i < carSize; i++) {        String checkname = carTypeList.get(i) + "(" + carNumList.get(i) + ")";        newSingleRL = generateSingleLayout(editTextId + i, checkBoxId + i, checkname, carNumList.get(i));        lin.addView(newSingleRL, LP_FW);    }    new_add_layout.addView(lin);}

carNumList和carTypeList是从后台得到的。

  "carnum": [    5,    16,    2,    3  ],  "cartype": [    "SUV",    "轿车",    "客车",    "商务车"  ],

在最外层的LinearLayout中放一个LinearLayout 然后for循环放RealtiveLayout 左边checkbox 右边edittext。

/** * 添加 checkbox+edittext的方法 * *  @param editId * @param chechkId * @param str      checkbox的名字 * @param carNum   当前车辆数 * @return */private RelativeLayout generateSingleLayout(final int editId, int chechkId, String str, final int carNum) {    layout_root_relative = new RelativeLayout(this);    final CheckBox cb = new CheckBox(this);    LinearLayout.LayoutParams LP_WW = new LinearLayout.LayoutParams(            LinearLayout.LayoutParams.WRAP_CONTENT, LinearLayout.LayoutParams.WRAP_CONTENT);    cb.setText(str);    cb.setId(chechkId);    cb.setTextSize(20);    cb.setLayoutParams(LP_WW);    layout_root_relative.addView(cb);    final EditText et = new EditText(this);    RelativeLayout.LayoutParams RL_WW = new RelativeLayout.LayoutParams(RelativeLayout.LayoutParams.WRAP_CONTENT,            RelativeLayout.LayoutParams.WRAP_CONTENT);    RL_WW.setMargins(100, 5, 10, 5);    et.setWidth(100);    et.setPadding(5, 5, 5, 5);    RL_WW.addRule(RelativeLayout.ALIGN_PARENT_RIGHT);    et.setLayoutParams(RL_WW);    et.setId(editId);    et.setInputType(InputType.TYPE_CLASS_NUMBER);    et.setCursorVisible(false);      //设置输入框中的光标不可见    et.setFocusable(false);          //无焦点    et.setFocusableInTouchMode(false);    layout_root_relative.addView(et);    //监听edit    et.addTextChangedListener(new TextWatcher() {        @Override        public void beforeTextChanged(CharSequence s, int start, int count, int after) {        }        @Override        public void onTextChanged(CharSequence s, int start, int before, int count) {        }        @Override        public void afterTextChanged(Editable s){            KLog.e(et.getId());            int editStr = Integer.parseInt(et.getText().toString());            if (editStr > carNum){                carNumBoolean = false;            }else{                carNumBoolean = true;            }        }    });    cb.setOnClickListener(new View.OnClickListener(){        @Override        public void onClick(View view) {            if (cb.isChecked()) {                Toast.makeText(getApplication(), cb.getId() + "勾选,edit:" + et.getId(), Toast.LENGTH_SHORT).show();                et.setCursorVisible(true);                et.setFocusable(true);                et.setFocusableInTouchMode(true);            } else {                Toast.makeText(getApplication(), cb.getId() + "未勾选", Toast.LENGTH_SHORT).show();                et.setCursorVisible(false);                et.setFocusable(false);                et.setFocusableInTouchMode(false);            }        }    });    return layout_root_relative;}

后面需要得到edittext中输入的数量，用一个list来放：

for (int i = 0; i < lin.getChildCount(); i++) {    RelativeLayout relativeLayout = (RelativeLayout) lin.getChildAt(i);    EditText editText = (EditText) relativeLayout.getChildAt(0);    setCarNum.add(Integer.valueOf(editText.getText().toString()));    KLog.e(setCarNum);}

将车辆类型和数量封装为json传给后台：

//apply_yongche_num:[{"客车":"2"},{"SUV":"3"},{"商务车":"4"},{"轿车":"15"}]JSONArray carTypeJson = new JSONArray();for(int i=0;i<carTypeList.size();i++){    JSONObject carTypeObj=new JSONObject();    String carType=carTypeList.get(i);    int carnum=setCarNum.get(i);    try {        carTypeObj.put(carType,carnum);        carTypeJson.put(carTypeObj);    } catch (JSONException ex){        throw new RuntimeException(ex);    }}

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