我想通过一个活动到另一个发送数据但我不明白,请大家帮忙变量错误。非常感谢您在这个问题上的时间和协助。安卓:错误:(20,51)错误:无法找到符号变量MESSAGE_TEXT
public class MainActivity extends AppCompatActivity {
EditText Message_Text;
public final static String MESSAGE_KEY="com.example.zeeshan.userinterface.message_key";
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}
public void sendMessage(View views) {
Message_Text= (EditText) findViewById(R.id.Message_Text);
String message=Message_Text.getText().toString();
Intent intent= new Intent(this, SecondActivity.class);
intent.putExtra(MESSAGE_KEY,message);
startActivity(intent);
}
}
第二活动代码:
public class SecondActivity extends AppCompatActivity {
public final static String MESSAGE_KEY="com.example.zeeshan.userinterface.message_key";
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
Intent intent= getIntent();
String message = intent.getStringExtra(MESSAGE_KEY);
TextView textView = new TextView(this);
textView.setTextSize(35);
// setContentView(R.layout.second_layout);
}
}
发布您的activity_main.xml –
这可能是您的xml布局错误。有没有'Message_Text'? –