MainActivity ------ MyActivity
Note: 1, 接收返回值时需要重载onActivityResult（）
2, 在设置返回resultCode时，要使用 setResult (int resultCode, Intent data)
【MainActivity.java】
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<br><br>package
sanyo.com.intent002;import android.os.Bundle;import android.app.Activity;import android.content.Intent;import android.view.Menu;import android.view.View;import android.view.View.OnClickListener;import android.widget.Button;import android.widget.TextView;public
class MainActivity extends
Activity { private
Button button; private
TextView textView; @Override protected
void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); button = (Button)findViewById(R.id.button_main); textView = (TextView)findViewById(R.id.textview_main); button.setOnClickListener(new
OnClickListener() { @Override public
void onClick(View v) { // TODO Auto-generated method stub Intent intent = new
Intent(MainActivity.this, MyActivity.class); //startActivity(intent); intent.putExtra("sanyo.com.intent002", "Hello MyActivity!"); startActivityForResult(intent, 123); } }); } @Override protected
void onActivityResult(int
requestCode, int
resultCode, Intent data) { // TODO Auto-generated method stub super.onActivityResult(requestCode, resultCode, data); if
(resultCode == 222) { String resultValue = data.getExtras().getString("sanyo.com.intent002"); textView.setText(resultValue); } } @Override public
boolean onCreateOptionsMenu(Menu menu) { // Inflate the menu; this adds items to the action bar if it is present. getMenuInflater().inflate(R.menu.main, menu); return
true; }} |
【MyActivity.java】
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package
sanyo.com.intent002;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;import android.widget.Toast;public
class MyActivity extends
Activity { private
Button button; private
TextView textView; Intent mIntent; @Override protected
void onCreate(Bundle savedInstanceState) { // TODO Auto-generated method stub super.onCreate(savedInstanceState); setContentView(R.layout.layout_myactivity); button = (Button)findViewById(R.id.button1); textView = (TextView)findViewById(R.id.textView1); mIntent = getIntent(); String getString = mIntent.getStringExtra("sanyo.com.intent002"); textView.setText(getString); Toast.makeText(getApplicationContext(), "I am MyActivity!", Toast.LENGTH_LONG).show(); button.setOnClickListener(new
OnClickListener() { @Override public
void onClick(View v) { // TODO Auto-generated method stub mIntent.putExtra("sanyo.com.intent002", "How are you MainActivity!"); setResult(222, mIntent); finish(); } }); }} |
【实现效果截图】
原文：http://www.cnblogs.com/Miami/p/3663001.html