Android应用源码之7.Intent初级学习-IT计算机-毕业设计.zip

package com.szy.intent.activity; 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.Toast; public class MainActivity extends Activity { private Button mainBtn=null; private final static int REQUEST_CODE=1; /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); mainBtn=(Button)findViewById(R.id.mainBtn); mainBtn.setOnClickListener(listener); } private OnClickListener listener=new OnClickListener() { @Override public void onClick(View v) { // Intent intent=new Intent(); // intent.setAction(Intent.ACTION_SENDTO); // intent.setData(Uri.parse("smsto:5554")); // intent.putExtra("sms_body", "Welcome to ..."); // startActivity(intent); Intent intent=new Intent(); intent.setClass(MainActivity.this, SecondActivity.class); intent.putExtra("str", "Intent Demo"); //startActivity(intent); startActivityForResult(intent, REQUEST_CODE); } }; @Override protected void onActivityResult(int requestCode, int resultCode, Intent data) { if (requestCode==REQUEST_CODE) { if (resultCode==SecondActivity.RESULT_CODE) { Bundle bundle=data.getExtras(); String str=bundle.getString("back"); Toast.makeText(MainActivity.this, str, Toast.LENGTH_LONG).show(); } } } }