Android studio点击按钮跳转闪退

Question

这是源代码

package com.example.helloworld;

import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;

import androidx.appcompat.app.AppCompatActivity;

public class MainActivity extends AppCompatActivity implements View.OnClickListener {
  //声明控件
    private Button mBtnLogin;
    private EditText mEtUser;
    private EditText mEtPassword;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        //找到控件
        mBtnLogin = findViewById(R.id.btn_Login);
        mEtUser = findViewById(R.id.et_1);
        mEtPassword = findViewById(R.id.et_2);

         //实现跳转


        //匹配对应的用户名和密码才能登录
        mBtnLogin.setOnClickListener(this);
    }

    public void onClick(View v){
        //需要获取输入的用户名和密码
        String username = mEtUser.getText().toString();
        String password = mEtPassword.getText().toString();
        Intent intent = null;

        //假设正确的账号密码分别是wjj 123456
        if (username.equals("wjj") && password.equals("123456")){
            //如果正确的话进行跳转
            intent = new Intent(MainActivity.this,SlideActivity.class);
            startActivity(intent);
        }else{
            //不正确,弹出登陆失败
        }
    }

    @Override
    public void onPointerCaptureChanged(boolean hasCapture) {

    }
}

这是Log

22:50    Executing tasks: [:app:assembleDebug] in project G:\Android-work

22:50    Gradle build finished in 989 ms

22:50    Success: Operation succeeded
有没有大佬麻烦帮忙看看 

Answer 1

要在AndroidMainifest.xml里面注册SlideActivity.class

<activity android:name="XXX.SlideActivity"/>