两个Activity之间传递数据包Bundle

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MainActivity

package com.example.mac.sendargs;import android.content.Intent;import android.support.v7.app.AppCompatActivity;import android.os.Bundle;import android.view.Menu;import android.view.MenuItem;import android.view.View;import android.widget.Button;public class MainActivity extends AppCompatActivity {    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);       findViewById(R.id.startAty).setOnClickListener(new View.OnClickListener() {           @Override           public void onClick(View view) {               Intent i =new Intent(MainActivity.this,TheAty.class);               //i.putExtra("data","Hello April!");               Bundle b = new Bundle();               b.putString("name","luka");               b.putInt("age",2);               b.putString("name1","lexi");               i.putExtra("data",b);               i.putExtras(b);               startActivity(i);           }       });    }}

SecondActivity(TheAty)

package com.example.mac.sendargs;import android.content.Intent;import android.support.v7.app.AppCompatActivity;import android.os.Bundle;import android.widget.TextView;public class TheAty extends AppCompatActivity {    private TextView tv;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_the_aty);        Intent i =getIntent();       // Bundle data = i.getExtras();        Bundle data = i.getBundleExtra("data");        tv=(TextView)findViewById(R.id.tv);//用TextView显示值        //tv.setText(i.getStringExtra("data"));        tv.setText(String.format("name=%s,age=%d,name1=%s",data.getString("name"),data.getInt("age"),data.getString("name1","April")));//    }}

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