前一个Activity
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 FirstActivity 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() { @Override public void onClick(View arg0) { //打开第二个Activity Intent intent = new Intent(FirstActivity.this,SecondActivity.class); intent.setAction(Intent.ACTION_VIEW); intent.putExtra("test", edit.getText().toString()); startActivityForResult(intent, 0); } }); } @Override protected void onActivityResult(int requestCode, int resultCode, Intent data) { // TODO Auto-generated method stub super.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 SecondActivity extends Activity { private TextView text; private EditText edit; private Button button; @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");//获取第一个Activity传来的数据 edit.setText(str); button.setOnClickListener(new OnClickListener() { @Override public void onClick(View arg0) { // TODO Auto-generated method stub //添加给第一个Activity的返回值，并设置resultCode Intent intent = new Intent(); intent.putExtra("return", edit.getText().toString()); setResult(RESULT_OK, intent); finish(); } }); } }