为什么我不能从活动的数据发送到片段
问题描述：
- ACTIVITY 1：发送数据（MA_NV）TO SWIPMENU_CONTROL公共类
public class MainActivity extends ActionBarActivity {
public Button DangKy_Btn;
public Button DangNhap_Btn;
public EditText MaNV_Edit;
public EditText Password_Edit;
public CheckBox TrangThai_CB;
public TextView MaNV_Info;
DBAdapter db;
String prefname="my_status";
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
db= new DBAdapter(MainActivity.this);
DangKy_Btn=(Button) findViewById(R.id.DangKy_Btn);
DangKy_Btn.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
Intent myIntent= new Intent(MainActivity.this,dang_ky.class);
startActivity(myIntent);
}
});
MaNV_Edit=(EditText) findViewById(R.id.MaNV_Edit);
MaNV_Info=(TextView) findViewById(R.id.MaNV_Info);
Password_Edit=(EditText) findViewById(R.id.Password_Edit);
TrangThai_CB=(CheckBox) findViewById(R.id.TrangThai_CB);
DangNhap_Btn=(Button) findViewById(R.id.DangNhap_Btn);
DangNhap_Btn.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
String Ma_NV=MaNV_Edit.getText().toString();
String Mat_Khau=Password_Edit.getText().toString();
db.open();
Cursor c=db.Check_Login(Ma_NV,Mat_Khau);
if(c.moveToFirst()){
do_Login(Ma_NV);
}
else Toast.makeText(MainActivity.this,"Thất bại",Toast.LENGTH_SHORT).show();
db.close();
}
});
}
public void do_Login(String Ma_NV){
Toast.makeText(MainActivity.this, Ma_NV, Toast.LENGTH_SHORT).show();
finish();
Intent myIntent=new Intent(MainActivity.this,SwipMenu_Control.class);
Bundle myBundle=new Bundle();
myBundle.putString("manv",Ma_NV);
myIntent.putExtra("Ma_NV",myBundle);
startActivity(myIntent);
}
protected void onPause(){
super.onPause(); //GOI HAM LUU TRANG THAI
savingPreferences();
}
protected void onResume(){
super.onResume(); //GOI HAM DOC TRANG THAI
restoringPreferences();
}
public void savingPreferences(){
SharedPreferences pre=getSharedPreferences(prefname,MODE_PRIVATE);
SharedPreferences.Editor editor=pre.edit();
String Ma_NV= MaNV_Edit.getText().toString();
String Pass=Password_Edit.getText().toString();
boolean trangthai=TrangThai_CB.isChecked();
if(!trangthai){
editor.clear();
}else{
editor.putString("Ma_NV", Ma_NV);
editor.putString("Password", Pass);
editor.putBoolean("Checked",trangthai);
}
editor.commit();
}
public void restoringPreferences(){
SharedPreferences pre=getSharedPreferences(prefname,MODE_PRIVATE);
boolean trangthai=pre.getBoolean("Checked",false);
if(trangthai)
{
String Ma_NV=pre.getString("Ma_NV","");
String Pass =pre.getString("Password", "");
MaNV_Edit.setText(Ma_NV);
Password_Edit.setText(Pass);
//Dang nhap vao luon
/* db.open();
Cursor c=db.Check_Login(Ma_NV,Pass);
if(c.moveToFirst()){
do_Login(Ma_NV);
}
else Toast.makeText(MainActivity.this,"Thất bại",Toast.LENGTH_SHORT).show();
db.close();*/
}
TrangThai_CB.setChecked(trangthai);
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
}
2.ACTIVITY 2：发送数据（MA_NV ），以FRAGMENT_PRODUCT为什么我不能从活动的数据发送到片段
public class SwipMenu_Control extends ActionBarActivity implements ActionBar.TabListener { /** * The {@link android.support.v4.view.PagerAdapter} that will provide * fragments for each of the sections. We use a * {@link FragmentPagerAdapter} derivative, which will keep every * loaded fragment in memory. If this becomes too memory intensive, it * may be best to switch to a * {@link android.support.v4.app.FragmentStatePagerAdapter}. */ SectionsPagerAdapter mSectionsPagerAdapter; /** * The {@link ViewPager} that will host the section contents. */ ViewPager mViewPager; protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.swipview_main); Intent callerIntent= getIntent(); Bundle packageFromCaller=callerIntent.getBundleExtra("Ma_NV"); String MaNV= packageFromCaller.getString("manv"); Fragment fragInfo = new Fragment(); Bundle bundle = new Bundle(); bundle.putString("manv", MaNV); fragInfo.setArguments(bundle); // Set up the action bar. final ActionBar actionBar = getSupportActionBar(); actionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_TABS); // Create the adapter that will return a fragment for each of the three // primary sections of the activity. mSectionsPagerAdapter = new SectionsPagerAdapter(getSupportFragmentManager()); // Set up the ViewPager with the sections adapter. mViewPager = (ViewPager) findViewById(R.id.pager); mViewPager.setAdapter(mSectionsPagerAdapter); // When swiping between different sections, select the corresponding // tab. We can also use ActionBar.Tab#select() to do this if we have // a reference to the Tab. mViewPager.setOnPageChangeListener(new ViewPager.SimpleOnPageChangeListener() { @Override public void onPageSelected(int position) { actionBar.setSelectedNavigationItem(position); } }); // For each of the sections in the app, add a tab to the action bar. for (int i = 0; i < mSectionsPagerAdapter.getCount(); i++) { // Create a tab with text corresponding to the page title defined by // the adapter. Also specify this Activity object, which implements // the TabListener interface, as the callback (listener) for when // this tab is selected. actionBar.addTab( actionBar.newTab() .setText(mSectionsPagerAdapter.getPageTitle(i)) .setTabListener(this)); } } @Override public boolean onCreateOptionsMenu(Menu menu) { // Inflate the menu; this adds items to the action bar if it is present. getMenuInflater().inflate(R.menu.main, menu); return true; } @Override public boolean onOptionsItemSelected(MenuItem item) { // Handle action bar item clicks here. The action bar will // automatically handle clicks on the Home/Up button, so long // as you specify a parent activity in AndroidManifest.xml. int id = item.getItemId(); if (id == R.id.action_settings) { return true; } return super.onOptionsItemSelected(item); } @Override public void onTabSelected(ActionBar.Tab tab, FragmentTransaction fragmentTransaction) { // When the given tab is selected, switch to the corresponding page in // the ViewPager. mViewPager.setCurrentItem(tab.getPosition()); } @Override public void onTabUnselected(ActionBar.Tab tab, FragmentTransaction fragmentTransaction) { } @Override public void onTabReselected(ActionBar.Tab tab, FragmentTransaction fragmentTransaction) { } /** * A {@link FragmentPagerAdapter} that returns a fragment corresponding to * one of the sections/tabs/pages. */ public class SectionsPagerAdapter extends FragmentPagerAdapter { public SectionsPagerAdapter(FragmentManager fm) { super(fm); } @Override public Fragment getItem(int position) { // getItem is called to instantiate the fragment for the given page. // Return a PlaceholderFragment (defined as a static inner class below). switch(position){ case 0: return PlaceholderFragment.newInstance(position); case 1: return Fragment_Product.newInstance(position); case 2: return Fragment_Accout.newInstance(position); default:return PlaceholderFragment.newInstance(position); } } @Override public int getCount() { // Show 3 total pages. return 3; } @Override public CharSequence getPageTitle(int position) { Locale l = Locale.getDefault(); switch (position) { case 0: return getString(R.string.title_section1).toUpperCase(l); case 1: return getString(R.string.title_section2).toUpperCase(l); case 2: return getString(R.string.title_section3).toUpperCase(l); } return null; } } /** * A placeholder fragment containing a simple view. */ public static class PlaceholderFragment extends Fragment{ /** * The fragment argument representing the section number for this * fragment. */ private static final String ARG_SECTION_NUMBER = "section_number"; /** * Returns a new instance of this fragment for the given section * number. */ public static PlaceholderFragment newInstance(int sectionNumber) { PlaceholderFragment fragment = new PlaceholderFragment(); Bundle args = new Bundle(); args.putInt(ARG_SECTION_NUMBER, sectionNumber); fragment.setArguments(args); return fragment; } public PlaceholderFragment() { } private Button Add_Guest; public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { View rootView = inflater.inflate(R.layout.fragment_guest, container, false); final String myValue = getArguments().getString("manv"); if(myValue!=null){ Add_Guest =(Button) rootView.findViewById(R.id.Btn_Add_Guest); Add_Guest.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { Toast.makeText(getActivity(), myValue, Toast.LENGTH_SHORT).show(); Intent intent=new Intent(getActivity(),Add_Guest.class); Bundle myBundle=new Bundle(); myBundle.putString("Ma_NV", myValue); intent.putExtra("manhanvien", myBundle); getActivity().startActivity(intent); } }); } else Toast.makeText(getActivity(), "haiz", Toast.LENGTH_SHORT).show(); return rootView; } } public static class Fragment_Product extends Fragment { /** * The fragment argument representing the section number for this * fragment. */ private static final String ARG_SECTION_NUMBER = "section_number"; /** * Returns a new instance of this fragment for the given section * number. */ public static Fragment_Product newInstance(int sectionNumber) { Fragment_Product fragment = new Fragment_Product(); Bundle args = new Bundle(); args.putInt(ARG_SECTION_NUMBER, sectionNumber); fragment.setArguments(args); return fragment; } public Fragment_Product() { } @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { View rootView = inflater.inflate(R.layout.fragment_product, container, false); return rootView; } public static class Fragment_Accout extends Fragment { /** * The fragment argument representing the section number for this * fragment. */ private static final String ARG_SECTION_NUMBER = "section_number"; /** * Returns a new instance of this fragment for the given section * number. */ public static Fragment_Accout newInstance(int sectionNumber) { Fragment_Accout fragment = new Fragment_Accout(); Bundle args = new Bundle(); args.putInt(ARG_SECTION_NUMBER, sectionNumber); fragment.setArguments(args); return fragment; } public Fragment_Accout() { } @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { View rootView = inflater.inflate(R.layout.fragment_accout, container, false); return rootView; } } } @Override public boolean onKeyDown(int keyCode, KeyEvent event) { //Handle the back button if(keyCode == KeyEvent.KEYCODE_BACK) { //Ask the user if they want to quit new AlertDialog.Builder(this) .setIcon(android.R.drawable.ic_dialog_alert) .setTitle("QUIT") .setMessage("BAN CO CHAC CHAN MUON THOAT") .setPositiveButton("YES", new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { //Stop the activity SwipMenu_Control.this.finish(); } }) .setNegativeButton("NO", null) .show(); return true; } else { return super.onKeyDown(keyCode, event); } } @Override public void onBackPressed() { new AlertDialog.Builder(this) .setIcon(android.R.drawable.ic_dialog_alert) .setTitle("Closing Activity") .setMessage("Are you sure you want to close this activity?") .setPositiveButton("Yes", new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { SwipMenu_Control.this.finish(); } }) .setNegativeButton("No", null) .show(); } } } @Override public boolean onOptionsItemSelected(MenuItem item) { // Handle action bar item clicks here. The action bar will // automatically handle clicks on the Home/Up button, so long // as you specify a parent activity in AndroidManifest.xml. int id = item.getItemId(); if (id == R.id.action_settings) { return true; } return super.onOptionsItemSelected(item); } }3.
> 10-16 12:03:47.793: E/AndroidRuntime(852): FATAL EXCEPTION: main 10-16
> 12:03:47.793: E/AndroidRuntime(852): java.lang.IllegalStateException:
> Could not find a method Add_Guest(View) in the activity class
> theanh.quanly.SwipMenu_Control for onClick handler on view class
> android.widget.Button with id 'Btn_Add_Guest' 10-16 12:03:47.793:
> E/AndroidRuntime(852): at android.view.View$1.onClick(View.java:3620)
> 10-16 12:03:47.793: E/AndroidRuntime(852): at
> android.view.View.performClick(View.java:4240) 10-16 12:03:47.793:
> E/AndroidRuntime(852): at
> android.view.View$PerformClick.run(View.java:17721) 10-16
> 12:03:47.793: E/AndroidRuntime(852): at
> android.os.Handler.handleCallback(Handler.java:730) 10-16
> 12:03:47.793: E/AndroidRuntime(852): at
> android.os.Handler.dispatchMessage(Handler.java:92) 10-16
> 12:03:47.793: E/AndroidRuntime(852): at
> android.os.Looper.loop(Looper.java:137) 10-16 12:03:47.793:
> E/AndroidRuntime(852): at
> android.app.ActivityThread.main(ActivityThread.java:5103) 10-16
> 12:03:47.793: E/AndroidRuntime(852): at
> java.lang.reflect.Method.invokeNative(Native Method) 10-16
> 12:03:47.793: E/AndroidRuntime(852): at
> java.lang.reflect.Method.invoke(Method.java:525) 10-16 12:03:47.793:
> E/AndroidRuntime(852): at
> com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:737)
> 10-16 12:03:47.793: E/AndroidRuntime(852): at
> com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553) 10-16
> 12:03:47.793: E/AndroidRuntime(852): at
> dalvik.system.NativeStart.main(Native Method) 10-16 12:03:47.793:
> E/AndroidRuntime(852): Caused by: java.lang.NoSuchMethodException:
> Add_Guest [class android.view.View] 10-16 12:03:47.793:
> E/AndroidRuntime(852): at
> java.lang.Class.getConstructorOrMethod(Class.java:423) 10-16
> 12:03:47.793: E/AndroidRuntime(852): at
> java.lang.Class.getMethod(Class.java:787) 10-16 12:03:47.793:
> E/AndroidRuntime(852): at android.view.View$1.onClick(View.java:3613)
> 10-16 12:03:47.793: E/AndroidRuntime(852): ... 11 more
答
只能从活动发送的数据通过使用监听器，抽象类或构造器片段。希望你能理解。
究竟什么不行？任何日志或错误消息？ – tristan2468 2014-10-16 15:44:14
感谢您的评论@ tristan2468。请帮助我！ – theanh 2014-10-16 16:07:47