android 利用startActivityForResult()方法得到另一个Activity的返回值

第一个Activity

package yyy.testandroid5;import android.app.Activity;import android.content.ComponentName;import android.content.Intent;import android.os.Bundle;import android.view.View;import android.view.View.OnClickListener;import android.widget.Button;import android.widget.EditText;public class TestAndroid5Activity extends Activity {private EditText edit;private Button button;    /** Called when the activity is first created. */    @Override    public void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.main);        edit = (EditText) findViewById(R.id.edit);        button = (Button) findViewById(R.id.button);                button.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View arg0) {        // TODO Auto-generated method stub        //打开第二个Activity        Intent intent = new Intent();          intent.setComponent(new ComponentName("yyy.testandroid6", "yyy.testandroid6.TestAndroid6Activity"));          intent.setAction(Intent.ACTION_VIEW);          intent.putExtra("test", edit.getText().toString());        startActivityForResult(intent, 0);  }});            }@Overrideprotected void onActivityResult(int requestCode, int resultCode, Intent data) {// TODO Auto-generated method stubsuper.onActivityResult(requestCode, resultCode, data);if(requestCode == 0){edit.setText(data.getStringExtra("return"));}}    }

第二个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.EditText;import android.widget.TextView;public class TestAndroid6Activity extends Activity {private TextView text;private EditText edit;private Button button;    /** Called when the activity is first created. */    @Override    public void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.main);        edit = (EditText) findViewById(R.id.edit);        button = (Button) findViewById(R.id.button);        String str = getIntent().getStringExtra("test");        edit.setText(str);                button.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View arg0) {// TODO Auto-generated method stub//添加给第一个Activity的返回值，并设置resultCodeIntent intent = new Intent();intent.putExtra("return", edit.getText().toString());setResult(RESULT_OK, intent);finish();}});    }}

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