【Android】學習筆記

<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".LoginActivity">

    <TextView
        android:id="@+id/tv_username"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="賬號："
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintHorizontal_bias="0.167"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        app:layout_constraintVertical_bias="0.148" />

    <TextView
        android:id="@+id/tv_password"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="密碼："
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintHorizontal_bias="0.168"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        app:layout_constraintVertical_bias="0.28" />

    <EditText
        android:id="@+id/et_username"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:ems="10"
        android:hint="請輸入有效的手機號"
        android:inputType="textPersonName"
        android:text=""
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintHorizontal_bias="0.696"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        app:layout_constraintVertical_bias="0.107" />

    <EditText
        android:id="@+id/et_password"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:ems="10"
        android:hint="請輸入6-20個數字"
        android:inputType="textPassword"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintHorizontal_bias="0.696"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        app:layout_constraintVertical_bias="0.245" />

    <Button
        android:id="@+id/btn_toMain"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="返迴首頁"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintHorizontal_bias="0.269"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        app:layout_constraintVertical_bias="0.398" />

    <Button
        android:id="@+id/btn_login"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="確認登錄"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintHorizontal_bias="0.814"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        app:layout_constraintVertical_bias="0.396" />

    <TextView
        android:id="@+id/textView"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="用戶登錄"
        app:layout_constraintHorizontal_bias="0.5"
        app:layout_constraintVertical_bias="0.027"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent"/>
</androidx.constraintlayout.widget.ConstraintLayout>

OkHttpClient client = new OkHttpClient();
FormBody formBody = new FormBody.Builder()
        .add("userPhone", phoneString)
        .add("userPwd", pwdString)
        .add("userName", nicknameString)
        .add("userNickName", nicknameString)
        .add("token",UrlConfig.TOKEN)
        .build();
Request request = new Request.Builder()
        .url("http://kjxycode.zisu.edu.cn/interfaceCommonForUser/CheckUserLogin")
        .post(formBody)
        .build();
Call call = client.newCall(request);
call.enqueue(new Callback() {
    @Override
    public void onFailure(Call call, IOException e) {
        Log.d("bug","Error");
    }

    @Override
    public void onResponse(Call call, Response response) throws IOException {
        String res = response.body().string();
        runOnUiThread(new Runnable() {//強制指定是在UI主線程上運行
            @Override
            public void run() {
                 //修改主線程view
                 Toast.makeText(_this, "註冊成功", Toast.LENGTH_SHORT).show();
            }
        });
        toLoginPage();
    }
});

OkHttpClient client = new OkHttpClient();
final Request request = new Request.Builder()
        .url(UrlConfig.GetUserList + "?token=" + UrlConfig.TOKEN)
        .get().build();
Call call = client.newCall(request);
call.enqueue(new Callback() {
        @Override
        public void onFailure(Call call, IOException e) {
            Log.d("mainBug-getUserList", "onFailure: " + e);
        }

        @Override
        public void onResponse(Call call, Response response) throws IOException {
            Log.d("mainBug", "userList: " + resp);
        }
});

List<Map<String,String>> userList = new ArrayList<>();
for (int i=0;i<9;i++) {
    Map<String,String> map=new HashMap<>();
    map.put("userName", "userName"+i);
    map.put("userPhone","userName"+i);
    userList.add(map);
}

simpleAdapter = new SimpleAdapter(
        _this,//當前頁面
        userList,//數據
        R.layout.listview_user,//自定義佈局
        new String[]{"userName","userPhone"},//每一行的單元格內容在Map中對應索引名
        new int[]{R.id.tvName,R.id.tvPhone});//每一行的單元格對應視圖的id號
lvUser.setAdapter(simpleAdapter);

public class UserListAdapter extends BaseAdapter {

    private List<GetUserRespBean.UserListBean> getUserList;

    private Context _this;

    public UserListAdapter(List<GetUserRespBean.UserListBean> getUserList, Context _this) {
        this.getUserList = getUserList;
        this._this = _this;
    }

    @Override
    public int getCount() {
        return getUserList.size();
    }

    @Override
    public Object getItem(int i) {
        return getUserList.get(i);
    }

    @Override
    public long getItemId(int i) {
        return getUserList.get(i).getId();
    }

    @Override
    public View getView(int i, View view, ViewGroup viewGroup) {
        view = LayoutInflater.from(_this).inflate(R.layout.listview_user,null);
        TextView tvName=view.findViewById(R.id.tvName);
        TextView tvPhone=view.findViewById(R.id.tvPhone);
        tvName.setText(getUserList.get(i).getUserName());
        tvPhone.setText(getUserList.get(i).getUserPhone());
        Button btnDel=view.findViewById(R.id.btn_update);
        btnDel.setOnClickListener(...);
    }

}

lvUser = findViewById(R.id.lvUser);
lvUser.setOnItemClickListener(new AdapterView.OnItemClickListener() {
    @Override
    public void onItemClick(AdapterView<?> adapterView, View view, int i, long l) {
        //...相關操作
    }
});