Android惯用代码记录

1.获得 RadioButton值

       rb1 = (RadioButton)findViewById(R.id.sex1);       if (rb1.isChecked())       {         sex = "M";       } else       {         sex = "F";       }

发送方:             Intent intent = new Intent();       intent.setClass(EX03_11.this,EX03_11_1.class);             Bundle bundle = new Bundle();       bundle.putDouble("height", height);       bundle.putString("sex", sex);       intent.putExtras(bundle);//打开另一个activity       startActivityForResult(intent, 0);接受方:    intent =this.getIntent();    bundle=intent.getExtras();    String sex =bundle.getString("sex");    double height =bundle.getDouble("height");

       new AlertDialog.Builder(EX03_12.this)          .setTitle(R.string.app_about)          .setMessage(R.string.app_about_msg)          .setPositiveButton(R.string.str_ok,              newDialogInterface.OnClickListener()              {                publicvoid onClick(DialogInterface dialoginterface, int i)                {                }              }).show();