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);
      }
    });
  }
}

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);
  }
}