Fragment資訊互動之Fragment獲取DialogFragment的返回資料
阿新 • • 發佈:2019-01-22
Fragment資訊互動會出現使用一個Fragment點選觸發DialogFragment,並將資訊資料返回到開始的Fragment中的情況。這種情況無法再使用startActivityforResult,所以可以使用setTargetFragment(),以及getTargetFragment().onActivityResult()的方式來進行收發資料。
ContentFragment是依附在ContentActivity上的Fragment,點選ContentFragment中的按鈕後,會跳出DialogFragment,此時DialogFragment與ContentFragment是同一個Activity。
關鍵程式碼:
1 在ContentFragment設定目標Fragment
EvaluateDialog evaluateDialog = new EvaluateDialog();
//設定目標Fragment
evaluateDialog.setTargetFragment(ContentFragment.this, REUEST_CODDE);
evaluateDialog.show(getFragmentManager(), "evaluate_dialog");
2 在DialogFragment設定返回資料:
3 在ContentFragment對返回資料進行接收解析:protected void setData(String str) { if(getTargetFragment()==null) { return ; } Intent intent = new Intent(); intent.putExtra(REQUESE, EvaluteArg[mWhich]); //獲得目標Fragment,並將資料通過onActivityResult放入到intent中進行傳值 getTargetFragment().onActivityResult(ContentFragment.REUEST_CODDE, Activity.RESULT_OK, intent); }
@Override public void onActivityResult(int requestCode, int resultCode, Intent data) { // TODO Auto-generated method stub super.onActivityResult(requestCode, resultCode, data); if(requestCode==REUEST_CODDE) { String stringExtra = data.getStringExtra(EvaluateDialog.REQUESE); System.out.println("stringExtra :"+stringExtra); } }
本例程式碼:http://download.csdn.net/detail/xiaoleiacm/9481784
ContentFragment:
package com.example.fragmentdialog;
import android.app.Fragment;
import android.content.Intent;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
import android.widget.Button;
public class ContentFragment extends Fragment {
protected static final int REUEST_CODDE = 0;
@Override
public void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// TODO Auto-generated method stub
View view = inflater.inflate(R.layout.content_fragment, null);
Button btn = (Button)view.findViewById(R.id.btn_fragment);
btn.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
System.out.println("123");
EvaluateDialog evaluateDialog = new EvaluateDialog();
//設定目標Fragment
evaluateDialog.setTargetFragment(ContentFragment.this, REUEST_CODDE);
evaluateDialog.show(getFragmentManager(), "evaluate_dialog");
}
});
return view;
}
/**
* 接收返回引數
*/
@Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
// TODO Auto-generated method stub
super.onActivityResult(requestCode, resultCode, data);
if(requestCode==REUEST_CODDE)
{
String stringExtra = data.getStringExtra(EvaluateDialog.REQUESE);
System.out.println("stringExtra :"+stringExtra);
}
}
}
DialogFragment:
package com.example.fragmentdialog;
import android.app.Activity;
import android.app.AlertDialog;
import android.app.Dialog;
import android.app.DialogFragment;
import android.content.DialogInterface;
import android.content.DialogInterface.OnClickListener;
import android.content.Intent;
import android.os.Bundle;
import android.widget.TextView;
public class EvaluateDialog extends DialogFragment {
public String[] EvaluteArg = new String[] { "GOOD", "BAD", "NORMAL" };
private int mWhich;
public static final String REQUESE="RESOIBSE";
@Override
public Dialog onCreateDialog(Bundle savedInstanceState) {
AlertDialog.Builder buidler = new AlertDialog.Builder(getActivity());
// 直接設定內容模式
TextView textView = new TextView(getActivity());
buidler.setView(textView);
buidler.setItems(EvaluteArg, new OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
mWhich = which;
System.out.println("內容 :" + EvaluteArg[which]);
System.out.println("當前點選項: " + which);
setData(EvaluteArg[which]);
}
});
return buidler.create();
}
protected void setData(String str) {
if(getTargetFragment()==null)
{
return ;
}
Intent intent = new Intent();
intent.putExtra(REQUESE, EvaluteArg[mWhich]);
//獲得目標Fragment,並將資料通過onActivityResult放入到intent中進行傳值
getTargetFragment().onActivityResult(ContentFragment.REUEST_CODDE, Activity.RESULT_OK, intent);
}
}
ContentActivity:package com.example.fragmentdialog;
import android.app.Activity;
import android.app.FragmentManager;
import android.app.FragmentTransaction;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
public class ContentActivity extends Activity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
InitContentFragment();
}
private void InitContentFragment() {
FragmentManager fragmentManager = getFragmentManager();
FragmentTransaction transaction = fragmentManager.beginTransaction();
ContentFragment contentFragment = new ContentFragment();
transaction.replace(R.id.fl_content, contentFragment);
transaction.commit();
}
}