我有一个带有editText,文本视图和按钮的mainActivity。用户输入一个数字点击按钮,另一个活动打开并转换用户输入(用一些随机计算,实际上并不重要),并将其返回到它在TextView中显示的mainActivity。 但是不管它在MainActivity中不会显示textView中的值。我不知道我做错了Android将值返回到MainActivity
MainActivity
public void sendMessage(View view) {
EditText editText = (EditText) findViewById(R.id.edit_message);
String message = editText.getText().toString();
Intent third = new Intent(this, ThirdActivity.class);
third.putExtra(EXTRA_MESSAGE, message);
startActivityForResult(third, 1);
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
// TODO Auto-generated method stub
if(requestCode == 1){
if(resultCode == Activity.RESULT_OK){
String msg = data.getStringExtra("result");
converted.setText(msg);
}if(resultCode == Activity.RESULT_CANCELED){
String msg = ("something went wrong");
converted.setText(msg);
}
}
}
SecondActivity
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_third);
Intent get = getIntent();
String msg = get.getStringExtra(MainActivity.EXTRA_MESSAGE);
int result = Integer.parseInt(msg) +2;
//String j = Double.toString(a);
get.putExtra("result", result);
setResult(RESULT_OK, get);
finish();
}
什么问题? –
ohh,对不起!我现在编辑了我的主要信息。 –