ButterKnife配置

AS版本：3.5

添加依賴：

//下載最新黃油刀
    implementation 'com.jakewharton:butterknife:10.2.0'
    annotationProcessor 'com.jakewharton:butterknife-compiler:10.2.0'

下載ButterKnife插件

在OnCreate()的Layout佈局文件中右鍵，進行配置控件或添加事件：

如下代碼：

package com.example.hzymvp01;

import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ProgressBar;
import android.widget.Toast;

import androidx.appcompat.app.AppCompatActivity;

import butterknife.BindView;
import butterknife.ButterKnife;
import butterknife.OnClick;

public class LoginActivity extends AppCompatActivity implements LoginView {

    private static final String TAG = "LoginActivty";

    @BindView(R.id.button)
    Button HzyButton;


    @BindView(R.id.progress)
    ProgressBar progressBar;

    @BindView(R.id.username)
    EditText username;

    @BindView(R.id.password)
    EditText password;

    LoginPresenter presenter;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_login);
        //綁定黃油刀
        ButterKnife.bind(this);
        //findViewById(R.id.button).setOnClickListener(this);
        presenter = new LoginPresenterImpl(this);
    }

    @Override
    protected void onDestroy() {
        presenter.onDestory();
        super.onDestroy();
    }


    //@Override
    public void onClick(View v) {
        Toast.makeText(this, "登錄成功", Toast.LENGTH_SHORT).show();
        Log.e(TAG, "onClick: 單擊時間");
        presenter.validateCredentials(username.getText().toString(), password.getText().toString());
    }

    @Override
    public void showProgress() {
        progressBar.setVisibility(View.VISIBLE);
    }

    @Override
    public void hideProgress() {
        progressBar.setVisibility(View.GONE);
    }

    @Override
    public void setUsernameError() {
        username.setError("用戶名爲空");
    }

    @Override
    public void setPasswordError() {
        password.setError("密碼爲空");
    }

    @Override
    public void navigateToHome() {
        Toast.makeText(this, "登錄成功", Toast.LENGTH_SHORT).show();
    }

    @OnClick(R.id.button)
    public void onViewClicked() {
        Log.e(TAG, "onViewClicked: 單擊單擊單擊單擊單擊單擊單擊單擊" );
        Toast.makeText(this, "登錄成功", Toast.LENGTH_SHORT).show();
    }

}

完結。