Question

我试图将数据从活动转移到另一个活动，但我从eclipse中得到错误：

Intent类型中的方法putExtra（String，boolean）不适用于参数（String，EditText）

请帮帮我

public class MainActivity extends Activity {
EditText text1;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    Button button = (Button) findViewById(R.id.submit);
    button.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
             text1   = (EditText)findViewById(R.id.editText1);


                Intent intent = new Intent(MainActivity.this,SecondActivity.class);
                intent.putExtra("text1",text1);
                //start the second Activity
                startActivity(intent);

        //   Toast.makeText(getApplicationContext(), "text", Toast.LENGTH_LONG).show();
        }
    });
}



@Override
  public boolean onCreateOptionsMenu(Menu menu) {
    MenuInflater inflater = getMenuInflater();
    inflater.inflate(R.menu.main_activity_actions, menu);
    return true;
}

}

Answer 1

我认为您正在寻找的是

intent.putExtra("text1",text1.getText().toString());

传递体重和身高之类的东西可能如下所示：

String weight = text1.getText().toString(); // where text1 is the EditText with user's weight
String height = text2.getText().toString(); // where text2 is the EditText with user's height

intent.putExtra("WEIGHT", weight); 
intent.putExtra("HEIGHT", height);

Answer 2

您可以在活动之间传递字符串和原始数据类型，但不能在两个活动之间传递UI组件。 http://developer.android.com/reference/android/content/Intent.html

Answer 3

您可以按如下方式传递字符串

intent.putExtra("text1",text1.getText().toString());

但是你无法传递UI组件，例如EditText，....

  Button button = (Button) findViewById(R.id.submit);
    button.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
             text1   = (EditText)findViewById(R.id.editText1);


                Intent intent = new Intent(MainActivity.this,SecondActivity.class);
                intent.putExtra("text1",text1.getText().toString());
                //start the second Activity
                startActivity(intent);

        //   Toast.makeText(getApplicationContext(), "text", Toast.LENGTH_LONG).show();
        }
    });

Answer 4

我知道你想做什么，你想要那个EditText的文字吗？

然后这样做..

public void onClick(View v) {
         text1   = (EditText)findViewById(R.id.editText1);
         String desiredtext=text1.getText();


            Intent intent = new Intent(MainActivity.this,SecondActivity.class);
            intent.putExtra("text1",desiredText);
            //start the second Activity
            startActivity(intent);

    //   Toast.makeText(getApplicationContext(), "text", Toast.LENGTH_LONG).show();
    }

在android中的活动之间传递数据 - 错误

4 个答案: