android学习笔记11--------------Activity之切换与参数传递

实现功能：

1.两个Activity之间的切换

2.两个Activity带返回值的切换

效果图：

点击切换Activity,或带返回值的Activity,出现：

点击关闭，其中带返回值的效果如下：

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;
import android.widget.TextView;

public class Main extends Activity
{
    Button button;
    Button button2;
    TextView textView;
    @Override
    public void onCreate(Bundle savedInstanceState)
    {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);

        button=(Button)findViewById(R.id.button);
        button2=(Button)findViewById(R.id.button2);
        textView=(TextView)findViewById(R.id.display);

        button.setOnClickListener(new OnClickListener()
        {
            @Override
            public void onClick(View v)
            {
                /**
                 * 向新activity传参数
                 */
                Intent intent= new Intent(Main.this, OtherActivity.class);
                intent.putExtra("age", 10);
                intent.putExtra("name", "lingming");
                Main.this.startActivity(intent);
            }
        });

        button2.setOnClickListener(new OnClickListener()
        {
            @Override
            public void onClick(View v)
            {
                /**
                 * 带返回值的Activity切换
                 */
                Intent intent= new Intent(Main.this, OtherActivity.class);
                intent.putExtra("age", 10);
                intent.putExtra("name", "lingming");
                Main.this.startActivityForResult(intent, 3);//3是标示请求码，随便写
            }
        });
    }
    /**
     * 接收带有返回值的Activity方法
     */
    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data)
    {
        super.onActivityResult(requestCode, resultCode, data);
        textView.setText("requestCode:"+requestCode+'\n'+
                         "resultCode:"+resultCode+'\n'+
                         "接收到："+data.getStringExtra("返回值")
        );
    }

}
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;
import android.widget.TextView;

public class Main extends Activity
{
Button button;
Button button2;
TextView textView;
@Override
public void onCreate(Bundle savedInstanceState)
{
  super.onCreate(savedInstanceState);
  setContentView(R.layout.main);

  button=(Button)findViewById(R.id.button);
  button2=(Button)findViewById(R.id.button2);
  textView=(TextView)findViewById(R.id.display);

  button.setOnClickListener(new OnClickListener()
  {
   @Override
   public void onClick(View v)
   {
    /**
     * 向新activity传参数
     */
    Intent intent= new Intent(Main.this, OtherActivity.class);
    intent.putExtra("age", 10);
    intent.putExtra("name", "lingming");
    Main.this.startActivity(intent);
   }
  });

  button2.setOnClickListener(new OnClickListener()
  {
   @Override
   public void onClick(View v)
   {
    /**
  &n

补充：移动开发 , Android ,