点登录按钮就闪退
下面是代码
```package com.example.test;
import android.app.Activity;
import com.example.test.R;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
public class Denglu extends Activity {
Button denglu,zhuche;
@Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.denglu);
denglu=(Button)findViewById(R.id.denglu);
zhuche=(Button)findViewById(R.id.zhuche);
denglu.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Intent intent=new Intent(Denglu.this,RegisterActivity.class);
startActivity(intent);
}
});
zhuche.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
//为了跳转到注册界面,并实现注册功能
Intent intent=new Intent(Denglu.this,LostFindActivity.class);
startActivity(intent);
finish();
}
});
}
}
第二个
package com.example.test;
import android.app.Activity;
import com.example.test.R;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.Toast;
public class LostFindActivity extends Activity {
Button register;
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.zc);
register =(Button)findViewById(R.id.register);
register.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Intent intent = new Intent(LostFindActivity.this,RegisterActivity.class);
startActivity(intent);
Toast.makeText(LostFindActivity.this, "注册成功,跳转中", Toast.LENGTH_LONG).show();
finish();
}
});
}
}
第三个
package com.example.test;
import com.example.test.MainActivity;
import com.example.test.R;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.Toast;
public class RegisterActivity extends Activity {
Button denglu;
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.dl);
denglu=(Button)findViewById(R.id.denglu);
denglu.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Intent intent = new Intent(RegisterActivity.this,MainActivity.class);
startActivity(intent);
Toast.makeText(RegisterActivity.this, "登录成功,跳转中", Toast.LENGTH_LONG).show();
finish();
}
});
}
}
跳转不了
思路是先注册然后登陆 进主界面
下面是报错信息
![图片说明](https://img-ask.csdn.net/upload/201906/28/1561724541_821567.jpg)
萌新一个 求各位大佬帮帮忙