new AlertDialog.Builder(bmi.this).setTitle(R.string.about_title).setMessage(R.string.about_msg).setPositiveButton("确认", new DialogInterface.OnClickListener(){ public void onClick(DialogInterface dialoginterface,int i){} }).setNegativeButton(R.string.homepage_label, new DialogInterface.OnClickListener(){ public void onClick(DialogInterface dialoginterface,int i) { //try{ Uri uri=Uri.parse(getString(R.string.homepage_uri)); Intent intent=new Intent(Intent.ACTION_VIEW,uri); startActivity(intent); //} /*catch(URISyntaxException e) { }*/ } }).show();
会自动消失的对话框
import android.widget.Toast;
Toast.makeText(bmi.this, "BMI计算器", Toast.LENGTH_SHORT).show();
