2

我正在开发一个项目，用户最多可以从微调器中选择五个选项，我想在按下提交按钮时在新活动中显示选定的选项我在按下按钮时打开了一个新活动，但没有显示，我是需要我需要做的步骤的帮助，这是我要显示数据的第二个屏幕的代码

    public class SecondScreenActivity extends Activity {

    TextView FirstIwi;
    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.selected_iwi);





        FirstIwi = (TextView) findViewById(R.id.spinner1);

         Intent intename = getIntent();


        String iwi1 = (String) intename.getSerializableExtra("USERNAME"); 
        //Spinner spinnername2 = (Spinner) findViewById(R.id.spinner2);



        FirstIwi.setText("First Iwi" + iwi1);


    }
}

头等舱

    import android.app.Activity;
    import android.content.Intent;
    import android.os.Bundle;
    import android.view.Menu;
    import android.view.View;
    import android.view.View.OnClickListener;
    import android.widget.Button;
    import android.widget.Spinner;

public class IwiSelect extends Activity {

    Spinner spinner1, spinner2, spinner3, spinner4, spinner5;
    Button btnSubmit; 
    String iwi1;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_iwiselect);

        addListenerOnButton();

    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.activity_iwi_select, menu);
        return true;
    }




    // get the selected drop down list value
      public void addListenerOnButton() {

        spinner1 = (Spinner) findViewById(R.id.spinner1);
        spinner2 = (Spinner) findViewById(R.id.spinner2);
        spinner3 = (Spinner) findViewById(R.id.spinner3);
        spinner4 = (Spinner) findViewById(R.id.spinner4);
        spinner5 = (Spinner) findViewById(R.id.spinner5);

        btnSubmit = (Button) findViewById(R.id.btnSubmit);

        btnSubmit.setOnClickListener(new OnClickListener() {

            public void onClick(View view) {

                iwi1 = spinner1.toString();
                //Starting a new Intent
                Intent nextScreen = new Intent(IwiSelect.this, SecondScreenActivity.class);

                //Sending data to another Activity
                nextScreen.putExtra("USERNAME", iwi1);
                //nextScreen.putExtra(spinner2.getContext().toString(), false);





                // starting new activity
                startActivity(nextScreen);




    }
        });

      }
      }
4

3 回答 3

2

您需要使用以下代码：

// find spinner object here
Spinner spinner1 = (Spinner) findViewById(R.id.spinner1);
//get selected value here
String itemStr = spinnername1.getSelectedItem().toString();
//put selected vale and start new activity
Intent mIntent = new Intent(ActivityOne.this, NewActivity.class);
mIntent.putExtra("data", itemStr);
startActivity(mIntent);


/**
* AT receiver side activity in onCreate
*/
Intent i = getIntent();
String dataString = i.getString("data");
于 2014-10-04T11:54:05.840 回答
0

如果这是您使用的实际代码，

String name1 = i.getStringExtra("");

是错的。你输入的()应该是你在你的Intent. 如果你有

myIntent.putExtra("myKey", myValue)

那么当你从Intent你需要使用的额外内容中得到额外的

String name1 = i.getStringExtra("myKey");

这将为您提供myValue. key为每个使用不同的extra.

如果这不这样做，那么请发布您发送Intent数据的方式以及您似乎丢失了值的位置

于 2013-01-18T04:29:19.660 回答
0

试试这个代码。

Spinner spinnername1 = (Spinner) findViewById(R.id.spinner1);
String mStr = spinnername1.getSelectedItem().toString();

将价值传递给意图

Intent mIntent = new Intent(CurrentActivity.this, NextActivity.class);
mIntent.putExtra("Value", mStr);
startActivity(mIntent);

从意图中获取价值。

Bundle bdl = getIntent().getExtras();
String mValue = bdl.getString("Value");
于 2013-01-18T04:57:26.460 回答