Android 不同Activity界面之前进行传值

第一界面代码： public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); listener1 = new OnClickListener() { public void onClick(View v) { //开始传值到第二个界面上 Intent intent1 = new Intent(ActivityMain.this, Activity1.class); intent1.putExtra("activityMain", "数据来自activityMain");
 //启动新界面并，回调结果 startActivityForResult(intent1, REQUEST_CODE); }
 };
 setContentView(R.layout.main); button1 = (Button) findViewById(R.id.button1); button1.setOnClickListener(listener1); setTitle("ActivityMain");
 }
 
    @Override //回调函数处理 protected void onActivityResult(int requestCode, int resultCode, Intent data) { if (requestCode == REQUEST_CODE) { if (resultCode == RESULT_CANCELED) setTitle("取消");
 else if (resultCode == RESULT_OK) { String temp=null; Bundle extras = data.getExtras();        if (extras != null) {         temp = extras.getString("store");        }
 setTitle(temp); } }
第二界面代码：

public void onCreate(Bundle savedInstanceState) {         super.onCreate(savedInstanceState);         setContentView(R.layout.activity1);         listener1 = new OnClickListener() { public void onClick(View v) {                                 //向主界面返回数据信息 Bundle bundle = new Bundle(); bundle.putString("store", "数据来自Activity1"); Intent mIntent = new Intent(); mIntent.putExtras(bundle); setResult(RESULT_OK, mIntent);
 finish();
 }
 };
               //处理从主界面传过来的信息 button1 = (Button) findViewById(R.id.button3); button1.setOnClickListener(listener1); String data=null; Bundle extras = getIntent().getExtras();
        if (extras != null) {             data = extras.getString("activityMain");        } setTitle("现在是在Activity1里:"+data);
    }

第一界面代码： public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); listener1 = new OnClickListener() { public void onClick(View v) { //开始传值到第二个界面上 Intent intent1 = new Intent(ActivityMain.this, Activity1.class); intent1.putExtra("activityMain", "数据来自activityMain");
 //启动新界面并，回调结果 startActivityForResult(intent1, REQUEST_CODE); }
 };
 setContentView(R.layout.main); button1 = (Button) findViewById(R.id.button1); button1.setOnClickListener(listener1); setTitle("ActivityMain");
 }
&nbsp;
&nbsp; &nbsp; @Override //回调函数处理 protected void onActivityResult(int requestCode, int resultCode, Intent data) { if (requestCode == REQUEST_CODE) { if (resultCode == RESULT_CANCELED) setTitle("取消");
 else if (resultCode == RESULT_OK) { String temp=null; Bundle extras = data.getExtras(); &nbsp; &nbsp; &nbsp; &nbsp;if (extras != null) { &nbsp; &nbsp; &nbsp; &nbsp; temp = extras.getString("store"); &nbsp; &nbsp; &nbsp; &nbsp;}
 setTitle(temp); } }
第二界面代码：

public void onCreate(Bundle savedInstanceState) { &nbsp; &nbsp; &nbsp; &nbsp; super.onCreate(savedInstanceState); &nbsp; &nbsp; &nbsp; &nbsp; setContentView(R.layout.activity1); &nbsp; &nbsp; &nbsp; &nbsp; listener1 = new OnClickListener() { public void onClick(View v) { &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; //向主界面返回数据信息 Bundle bundle = new Bundle(); bundle.putString("store", "数据来自Activity1"); Intent mIntent = new Intent(); mIntent.putExtras(bundle); setResult(RESULT_OK, mIntent);
 finish();
 }
 };
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;//处理从主界面传过来的信息 button1 = (Button) findViewById(R.id.button3); button1.setOnClickListener(listener1); String data=null; Bundle extras = getIntent().getExtras();
 &nbsp; &nbsp; &nbsp; &nbsp;if (extras != null) { &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; data = extras.getString("activityMain"); &nbsp; &nbsp; &nbsp; &nbsp;} setTitle("现在是在Activity1里:"+data);
&nbsp; &nbsp; }