Android Activity之间通信

package com.example.myapp;

import android.app.Activity;

import android.content.DialogInterface;

import android.content.Intent;

import android.os.Bundle;

import android.view.View;

import android.widget.Button;

public class MyActivity extends Activity {

    private Button btnOk = null;

    /**

     * Called when the activity is first created.

     */

    @Override

    public void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.main);

        btnOk = (Button)findViewById(R.id.btnCallOther);

        btnOk.setOnClickListener(new MyButtonListener());

    }

    class MyButtonListener implements View.OnClickListener {

        @Override

        public void onClick(View view) {

            Intent intent = new Intent();

            intent.putExtra("key","value");

            intent.setClass(MyActivity.this,otherActivity.class);

            MyActivity.this.startActivity(intent);

        }

    }

}

package com.example.myapp;

import android.app.Activity;

import android.content.Intent;

import android.os.Bundle;

import android.widget.TextView;

/**

 * Created by chang on 14-9-17.

 */

public class otherActivity extends Activity{

    private TextView tv = null;

    @Override

    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.other);

        Intent intent = getIntent();

        String s = intent.getStringExtra("key");

        tv = (TextView)findViewById(R.id.otherTextView);

        tv.setText(s);

    }

}