JAVA按钮显示用户名+密码

package com.example.zc;

import android.app.Activity;
import android.os.Bundle;
import android.view.Menu;
import android.view.View;
import android.widget.EditText;
import android.widget.Toast;

public class MainActivity extends Activity {
    private EditText edit1;
    private EditText edit2;
    String name;
    String pwd;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        edit1 = (EditText) findViewById(R.id.editText1);
        edit2 = (EditText) findViewById(R.id.editText2);
    }

public void Login(View view){
    name = edit1.getText().toString();
    pwd = edit2.getText().toString();
              Toast.makeText(MainActivity.this,name+pwd,Toast.LENGTH_SHORT).show();
}
    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.main, menu);
        return true;
    }
    

}

尤其注意

      edit1 = (EditText) findViewById(R.id.editText1);
        edit2 = (EditText) findViewById(R.id.editText2);

的顺序，由于局部函数顺序关系，所以要在自定义函数内写