使用bundle在Activity之间传递数据

从源Activity中传递数据

//数据写入Intent
Intent openWelcomeActivityIntent = new Intent();
Bundle myBundleForName = new Bundle();
myBundleForName.putString("Key_Name",inName.getText().toString());
myBundleForName.putString("Key_Age",inAge.getText().toString());
openWelcomActivityIntent.putExtras(myBundleForName);
openWlecomeActivityIntent.setClass(AndroidBundle.this,Welcome.class);
startActivity(openWelcomeActivityIntent);

目标Activity中获取数据

//从Intent中获取数据
Bundle myBundleForGetName = this.getIntent().getExtras();
String name = myBundleForGetName.getString("Key_Name");
myTextView_showName.setText("欢迎进入" + name);

从源请求Activity中通过一个Intent 把一个服务请求传到目标Activity中
private Intent toNextIntent;//Intent 成员声明
toNextIntent = new Intent();//Intent定义
toNextIntent.setClass(TwoActivityME3.this, SecondActivity3.class);//设定开启的下一个Activity
startActivityForResult(toNextIntent, REQUEST_ASK);//开启Intent时候,把请求码同时传递

在源请求Activity中等待Intent返回应答结果,通过重载onActivityResult()方法
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data)
{
//TODO Auto-generated method stub
super.onActivityResult(requestCode, resultCode, data);
if(requestCode == REQUEST_ASK)
{
if(resultCode == RESULT_CANCELED)
{
setTitle("Cannel****");
}
else if (resultCode == RESULT_OK)
{
showBundle = data.getExtras();//从返回的Intent中获得Bundle
Name = showBundle.getString("myName");//从bundle中获得相应数据
test.setText("the name get from the second layout:\n" + Name);
}
}
}
第一个参数是开启请求Intent时的对应请求码,可以自己定义
第二个参数是目标Activity返回的验证结果码
第三个参数是目标Activity返回的Intent
目标Activity中发送请求结果代码,连同源Activity请求的数据一同绑定到Bundle中通过Intent传回源请求Activity中
backIntent =new Intent();
stringBundle =new Bundle();
stringBundle.putString("myName", Name);
backIntent.putExtras(stringBundle);
setResult(RESULT_OK, backIntent);//返回Activity结果码
finish();