两个Activity之间传递数据包Bundle

最新推荐文章于 2018-12-10 08:53:31 发布

原创最新推荐文章于 2018-12-10 08:53:31 发布 · 363 阅读

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本文介绍了一个Android应用中如何通过Intent使用Bundle来传递包括字符串、整型等在内的复杂数据结构，并展示了如何在接收活动中解析这些数据。

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")));
//
    }
}