毕设-----传递数据包

package com.example.wuzuo;

import android.content.Intent;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;

public class MainActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        findViewById(R.id.cdcs).setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Intent i=new Intent(MainActivity.this,Main2Activity.class);
                Bundle b=new Bundle();
                b.putString("name","wuzuodong");
                b.putInt("age",23);
                i.putExtras(b);
                //i.putExtra("date","dddddddddddd");
                startActivity(i);



            }
        });
    }
}

package com.example.wuzuo;

import android.content.Intent;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.widget.TextView;

public class Main2Activity extends AppCompatActivity {
     private TextView tv;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main2);
        Intent i= getIntent();
        Bundle data=i.getExtras();
        tv=(TextView) findViewById(R.id.tv);
        tv.setText(String.format("name=%s,age=%d",data.getString("name"),data.getInt("age")));

    }
}