Activity中使用Intent实现页面跳转与参数的传递

新建一个FirstAvtivity.java

package com.zhuguangwei;

import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;

public class FirstActivity extends Activity {
    private Button myButton;
    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        
        myButton = (Button) findViewById(R.id.myButton);
        myButton.setOnClickListener(new OnClickListener() {
            
            @Override
            public void onClick(View v) {
                // TODO Auto-generated method stub
                Intent intent = new Intent();
                //Intent传递参数
                intent.putExtra("testIntent", "123");
                intent.setClass(FirstActivity.this, SecondActivity.class);
                FirstActivity.this.startActivity(intent);
            }
        });
    }
}

新建第二个SecondActivity.java

package com.zhuguangwei;

import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.widget.TextView;

public class SecondActivity extends Activity{
    private TextView myTextView;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        // TODO Auto-generated method stub
        super.onCreate(savedInstanceState);
        setContentView(R.layout.other);
        //使用Intent对象得到FirstActivity传递来的参数
        Intent intent = getIntent();
        String value = intent.getStringExtra("testIntent");
        
        myTextView = (TextView) findViewById(R.id.myTextView);
        myTextView.setText(value);
    }
}

两个Activity都要在AndroidMenifest.xml中注册