fragment传值给Activity

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一、如何从fragment传值到Activity

先上一张大概的流程图：

总共两步：1、通过回调接口，将值从fragment传递给宿主activity

2、通过Intent或者Bundle将值从宿主Activity传给另一个Activity

具体关键代码：

//--------------------------------------------fragment--------------------------------------------------------------

private callbackValue Interface_callback;//回调接口，用来和activity互通信息
/**
* 回调接口，用来传记数值给目标activity,经过中介（父类activity）再向目标值传递
* @author asus
*
*/
public interface callbackValue
{
  public void sendDataOfRecord(List<RecordItem> data,int kinds);
}

/**
* 这是与activity相关联的方法
*/
@Override
public void onAttach(Activity activity) {
  super.onAttach(activity);
  Interface_callback = (callbackValue)activity;
}

//---------------------------------------------------宿主Activity-----------------------------------------

public class HomeActivity extends FragmentActivity implements callbackValue{
private ViewPager mViewpager;
private TabPageIndicator indicator;
private Context context;
private String[] Titles = {"展示","搜索","下载","记录"};

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
//替换fragment代码略

}

@Override
public void sendDataOfRecord(List<RecordItem> data,int kinds) {
  Intent intent = new Intent();
  intent.putExtra("data", (Serializable)data);
  intent.putExtra("kinds", kinds);
  intent.setClass(context,LineChartActivity.class);
  startActivity(intent);
}

//-----------------------------------------------------要传值的Activity-------------------------------------

public class LineChartActivity extends ActionBarActivity {
private ArrayList<Integer> List = new ArrayList<Integer>();

@Override
protected void onCreate(Bundle savedInstanceState) {
  super.onCreate(savedInstanceState);
  setContentView(R.layout.activity_line_chart);
  Intent intent = getIntent();
  ArrayList<RecordItem> data = (ArrayList<RecordItem>) intent
    .getSerializableExtra("data");//获取intent中的数据

}

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