两个Activity通信（二）

主Activity获取外部Activity返回的值

package info.qingchun; 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.LinearLayout; import android.widget.Toast; public class ActActivity extends Activity implements OnClickListener { /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState){ super.onCreate(savedInstanceState); setContentView(R.layout.main); Button btn = new Button(this.getApplicationContext()); btn.setOnClickListener(this); btn.setText("StartActivity!"); LinearLayout ll = (LinearLayout)findViewById(R.id.ll); ll.addView(btn); } @Override protected void onActivityResult(int requestCode, int resultCode, Intent data) { // TODO Auto-generated method stub if(requestCode == 1){ if(RESULT_OK == resultCode){ Bundle bundle = data.getExtras(); Toast.makeText(getApplicationContext(),bundle.getString("name"),1).show(); } } super.onActivityResult(requestCode, resultCode, data); } @Override public void onClick(View v) { // TODO Auto-generated method stub //Toast.makeText(this.getApplicationContext(),"Test",1).show(); Intent intent = new Intent(this.getApplicationContext(),SecActivity.class); startActivityForResult(intent, 1); } }

package info.qingchun; 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; import android.widget.Toast; public class SecActivity extends Activity implements OnClickListener{ Button btn; EditText et; String s; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.showmsg); btn = (Button)findViewById(R.id.btn); btn.setOnClickListener(this); et = (EditText)findViewById(R.id.name); } @Override public void onClick(View v) { // TODO Auto-generated method stub //Toast.makeText(this.getApplicationContext(),s,1).show(); s = et.getText().toString(); Intent intent = new Intent(); intent.putExtra("name",s); setResult(RESULT_OK,intent); finish(); } }