android 跳转并传接参数

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package com.sun.hello;

import android.app.Activity;

import android.content.Intent;

import android.location.GpsStatus.Listener;

import android.net.Uri;

import android.os.Bundle;

import android.view.View;

import android.view.View.OnClickListener;

import android.widget.Button;

import android.widget.Toast;

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public class HelloActivity extends Activity {

private Button button = null;

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/** Called when the activity is first created. */

@Override

public void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.main);

button = (Button) findViewById(R.id.but1);

button.setOnClickListener(listener);

}

private OnClickListener listener = new OnClickListener() {

public void onClick(View v) {

// TODO Auto-generated method stub

Intent intent = new Intent();

intent.setClass(HelloActivity.this, SecondActivity.class);//

intent.putExtra("str","Intent demo");

startActivity(intent);

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}

};

}

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SecondActivity。java

package com.sun.hello;

import android.app.Activity;

import android.content.Intent;

import android.os.Bundle;

import android.widget.Button;

import android.widget.TextView;

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public class SecondActivity extends Activity {

private Button button;

private TextView secondTxt;

public void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.secondmain);

Intent intent=getIntent();

Bundle bundle=intent.getExtras();

String str=bundle.getString("str");

secondTxt=(TextView)findViewById(R.id.secondTxt);

secondTxt.setText(str);

}

}