Example usage for android.text TextWatcher TextWatcher

Introduction

In this page you can find the example usage for android.text TextWatcher TextWatcher.

Prototype

TextWatcher

Source Link

Usage

From source file:com.michael.feng.textlater.NewActivity.java

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

    // Remove title bar
    // requestWindowFeature(Window.FEATURE_NO_TITLE);

    setContentView(R.layout.activity_new);
    getSupportActionBar().setDisplayUseLogoEnabled(false);
    getSupportActionBar().setDisplayHomeAsUpEnabled(false);
    getSupportActionBar().setDisplayShowHomeEnabled(false);
    getSupportActionBar().setDisplayShowTitleEnabled(false);
    getSupportActionBar().setDisplayShowCustomEnabled(true);
    getSupportActionBar().setCustomView(R.layout.abs_layout_new);

    backButton = (ImageView) findViewById(R.id.back);
    backButton.setOnClickListener(new OnClickListener() {
        @Override/*from  w  w  w  .j  av  a  2s.  c o  m*/
        public void onClick(View arg0) {
            finish();
        }
    });
    backButton.setOnTouchListener(new OnTouchListener() {
        @Override
        public boolean onTouch(View arg0, MotionEvent event) {
            switch (event.getAction()) {
            case MotionEvent.ACTION_DOWN:
                // touch down code
                backButton.setBackgroundColor(Color.rgb(104, 156, 210));
                break;

            case MotionEvent.ACTION_MOVE:
                // touch move code
                break;

            case MotionEvent.ACTION_UP:
                // touch up code
                backButton.setBackgroundColor(Color.TRANSPARENT);
                break;
            }
            return false;
        }
    });

    // Init Add Contact Button and EditText
    textContact = (EditText) findViewById(R.id.textContact);
    textContact.addTextChangedListener(new TextWatcher() {
        @Override
        public void afterTextChanged(Editable arg0) {
            // TODO Auto-generated method stub
        }

        @Override
        public void beforeTextChanged(CharSequence arg0, int arg1, int arg2, int arg3) {
            // TODO Auto-generated method stub
        }

        @Override
        public void onTextChanged(CharSequence arg0, int arg1, int arg2, int arg3) {
            validateMessage();
        }
    });
    textContact.setOnClickListener(new OnClickListener() {
        @Override
        public void onClick(View arg0) {
            textContact.setSelection(textContact.getText().length());
        }
    });

    addContactButton = (Button) findViewById(R.id.addContactButton);
    addContactButton.setOnClickListener(new OnClickListener() {
        @Override
        public void onClick(View arg0) {
            // TODO Auto-generated method stub
            Log.d("add button click", "hep");
            Intent in = new Intent(getApplicationContext(), ContactsActivity.class);
            contactNames = textContact.getText().toString();
            if (null != contactNames && !"".equals(contactNames)) {
                in.putExtra("contactNames", contactNames);
                in.putExtra("contactNumbers", contactNumbers);
                Log.d("addbutton contactNames", contactNames);
                Log.d("addbutton contactNumbers", contactNumbers);
            }
            int requestCode = 0;
            startActivityForResult(in, requestCode);
        }
    });

    // Init TextDate EditText
    textDate = (EditText) findViewById(R.id.textDate);
    textDate.setInputType(InputType.TYPE_NULL);
    textDate.setOnFocusChangeListener(new OnFocusChangeListener() {
        @Override
        public void onFocusChange(View view, boolean hasFocus) {
            if (hasFocus) {
                showDatePickerDialog(view);
            }
        }
    });
    textDate.setOnClickListener(this);

    // Init TextDate Button
    setDateButton = (Button) findViewById(R.id.setDateButton);
    setDateButton.setOnClickListener(this);

    // Init TextTime EditText
    textTime = (EditText) findViewById(R.id.textTime);
    textTime.setInputType(InputType.TYPE_NULL);
    textTime.setOnFocusChangeListener(new OnFocusChangeListener() {
        @Override
        public void onFocusChange(View view, boolean hasFocus) {
            if (hasFocus) {
                showTimePickerDialog(view);
            }
        }
    });
    textTime.setOnClickListener(this);

    // Init TextTime Button
    setTimeButton = (Button) findViewById(R.id.setTimeButton);
    setTimeButton.setOnClickListener(this);

    // Init Active Button and Content EditText
    textContent = (EditText) findViewById(R.id.textContent);
    textContent.addTextChangedListener(new TextWatcher() {
        @Override
        public void afterTextChanged(Editable arg0) {
            validateMessage();
        }

        @Override
        public void beforeTextChanged(CharSequence arg0, int arg1, int arg2, int arg3) {
            // TODO Auto-generated method stub
        }

        @Override
        public void onTextChanged(CharSequence arg0, int arg1, int arg2, int arg3) {
            // TODO
        }
    });
    sendButton = (Button) findViewById(R.id.sendButton);
    sendButton.setOnClickListener(this);
}

---

From source file:com.umeng.message.example.MainActivity.java

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    pushDao = PushDao.getInstance(this);

    getWindow().setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_ADJUST_PAN);
    DisplayMetrics dm = new DisplayMetrics();
    getWindowManager().getDefaultDisplay().getMetrics(dm);
    screenWidth = dm.widthPixels;// ww  w  . j a  v  a2s. c om

    setContentView(R.layout.activity_main);

    printKeyValue();

    mPushAgent = PushAgent.getInstance(this);
    mPushAgent.onAppStart();
    mPushAgent.enable(MyApplication.mRegisterCallback);

    tvStatus = (TextView) findViewById(R.id.tvStatus);
    btnEnable = (ImageView) findViewById(R.id.btnEnable);
    btnaAddTag = (Button) findViewById(R.id.btnAddTags);
    btnAddAlias = (Button) findViewById(R.id.btnAddAlias);
    btnListTag = (Button) findViewById(R.id.btnListTags);
    infoTextView = (TextView) findViewById(R.id.info);
    edTag = (EditText) findViewById(R.id.edTag);
    edAlias = (EditText) findViewById(R.id.edAlias);
    edAliasType = (EditText) findViewById(R.id.edAliasType);
    spAliasType = (Spinner) findViewById(R.id.spAliasType);

    edAliasType.setOnFocusChangeListener(new android.view.View.OnFocusChangeListener() {

        @Override
        public void onFocusChange(View v, boolean hasFocus) {
            if (hasFocus) {
                edAliasTypeFocus = true;
            } else {
                edAliasTypeFocus = false;
            }
        }

    });

    edAliasType.addTextChangedListener(new TextWatcher() {

        @Override
        public void beforeTextChanged(CharSequence s, int start, int count, int after) {
            // TODO Auto-generated method stub

        }

        @Override
        public void onTextChanged(CharSequence s, int start, int before, int count) {
            // TODO Auto-generated method stub
            if (edAliasTypeFocus) {
                spAliasType.setSelection(0);
            }
        }

        @Override
        public void afterTextChanged(Editable s) {
            // TODO Auto-generated method stub

        }

    });

    String[] aliasType = new String[] { "Alias Type:", ALIAS_TYPE.SINA_WEIBO, ALIAS_TYPE.BAIDU,
            ALIAS_TYPE.KAIXIN, ALIAS_TYPE.QQ, ALIAS_TYPE.RENREN, ALIAS_TYPE.TENCENT_WEIBO, ALIAS_TYPE.WEIXIN };
    ArrayAdapter<String> adapter = new ArrayAdapter<String>(this,
            android.R.layout.simple_list_item_single_choice, aliasType);
    spAliasType.setAdapter(adapter);
    spAliasType.setBackgroundColor(Color.LTGRAY);
    spAliasType.setOnItemSelectedListener(new OnItemSelectedListener() {

        @Override
        public void onItemSelected(AdapterView<?> arg0, View arg1, int arg2, long arg3) {
            // TODO Auto-generated method stub
            TextView tv = (TextView) arg1;
            if (tv != null) {
                int rate = (int) (5.0f * (float) screenWidth / 320.0f);
                int textSize = rate < 15 ? 15 : rate;
                tv.setTextSize((float) textSize);
            }

            if (arg2 != 0) {
                String type = (String) spAliasType.getItemAtPosition(arg2);
                edAliasType.setText(type);
            } else if (!edAliasTypeFocus) {
                edAliasType.setText("");
            }
        }

        @Override
        public void onNothingSelected(AdapterView<?> arg0) {
            // TODO Auto-generated method stub

        }

    });

    tvStatus.setOnClickListener(clickListener);
    btnEnable.setOnClickListener(clickListener);
    btnaAddTag.setOnClickListener(clickListener);
    btnListTag.setOnClickListener(clickListener);
    btnAddAlias.setOnClickListener(clickListener);

    updateStatus();
    mPushAgent.setPushIntentServiceClass(MyPushIntentService.class);

    callbackReceiver = new CallbackReceiver();
    IntentFilter filter = new IntentFilter();
    filter.addAction(MyApplication.CALLBACK_RECEIVER_ACTION);
    registerReceiver(callbackReceiver, filter);
}

---

From source file:biz.easymenu.easymenung.LoginFragment.java

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
    v = li.inflate(R.layout.logindialog, container, false);

    WindowManager.LayoutParams WMLP = this.getDialog().getWindow().getAttributes();

    adultsNb = (NumberPicker) v.findViewById(R.id.adultnumpick);
    childrenNb = (NumberPicker) v.findViewById(R.id.childrennumpick);
    etPass = (EditText) v.findViewById(R.id.loginPass);

    pbar = (ProgressBar) v.findViewById(R.id.pBarLogin);

    btnOk = (Button) v.findViewById(R.id.lgnbtnOK);
    btnCancel = (Button) v.findViewById(R.id.lgnbtnCancel);
    btnDiners = (Button) v.findViewById(R.id.lgndinersbtnOK);

    btnDiners.setOnClickListener(new View.OnClickListener() {
        @Override//from   w ww.  ja  va  2  s.c  om
        public void onClick(View v) {

            new Thread(new DinersRun()).start();
        }
    });

    btnOk.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            pbar.setVisibility(View.VISIBLE);
            new Thread(new NewSessionRun()).start();
        }
    });

    btnCancel.setOnClickListener(new View.OnClickListener() {

        @Override
        public void onClick(View v) {

            dismiss();
        }
    });

    WMLP.y = 100; //y position
    WMLP.gravity = Gravity.TOP;
    WMLP.windowAnimations = R.style.PauseDialogAnimation;
    this.getDialog().getWindow().setAttributes(WMLP);
    this.getDialog().requestWindowFeature(Window.FEATURE_NO_TITLE);
    //this.getDialog().getWindow().getAttributes().windowAnimations = R.style.PauseDialogAnimation;
    spin = (AutoCompleteTextView) v.findViewById(R.id.spinnerLogin);

    adapter = new ArrayAdapter<String>(getActivity(), R.layout.autocompleteview, items);

    spin.setAdapter(adapter);

    spin.addTextChangedListener(new TextWatcher() {

        public void onTextChanged(CharSequence s, int start, int before, int count) {
            if (count == 1 && start == 0) {
                pbar.setVisibility(View.VISIBLE);
                new Thread(new LoadItemsRun()).start();
            }
        }

        public void beforeTextChanged(CharSequence s, int start, int count, int after) {
            // TODO Auto-generated method stub

        }

        public void afterTextChanged(Editable s) {

        }
    });

    return v;
}

---

From source file:io.github.sunggu.searchimage.ui.ImageGridFragment.java

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {

    final View v = inflater.inflate(R.layout.image_search_fragment, container, false);

    edtSearchKeyword = (EditText) v.findViewById(R.id.search_keyword);
    edtSearchKeyword.addTextChangedListener(new TextWatcher() {
        @Override/*from  ww w. java2  s  .c om*/
        public void beforeTextChanged(CharSequence s, int start, int count, int after) {

        }

        @Override
        public void onTextChanged(CharSequence s, int start, int before, int count) {

        }

        @Override
        public void afterTextChanged(Editable s) {
            OpenApi.getInstance().requestSearchImage(s.toString(), mResponseListener, mErrorListener);
        }
    });

    final GridView mGridView = (GridView) v.findViewById(R.id.search_result_grid);
    mGridView.setAdapter(mAdapter);
    mGridView.setOnItemClickListener(this);
    mGridView.setOnScrollListener(new AbsListView.OnScrollListener() {
        @Override
        public void onScrollStateChanged(AbsListView absListView, int scrollState) {
            // Pause fetcher to ensure smoother scrolling when flinging
            if (scrollState == AbsListView.OnScrollListener.SCROLL_STATE_FLING) {
                // Before Honeycomb pause image loading on scroll to help with performance
                if (!Utils.hasHoneycomb()) {
                    mImageFetcher.setPauseWork(true);
                }
            } else {
                mImageFetcher.setPauseWork(false);
            }
        }

        @Override
        public void onScroll(AbsListView absListView, int firstVisibleItem, int visibleItemCount,
                int totalItemCount) {
        }
    });

    // This listener is used to get the final width of the GridView and then calculate the
    // number of columns and the width of each column. The width of each column is variable
    // as the GridView has stretchMode=columnWidth. The column width is used to set the height
    // of each view so we get nice square thumbnails.
    mGridView.getViewTreeObserver().addOnGlobalLayoutListener(new ViewTreeObserver.OnGlobalLayoutListener() {
        @TargetApi(VERSION_CODES.JELLY_BEAN)
        @Override
        public void onGlobalLayout() {
            if (mAdapter.getNumColumns() == 0) {
                final int numColumns = (int) Math
                        .floor(mGridView.getWidth() / (mImageThumbSize + mImageThumbSpacing));
                if (numColumns > 0) {
                    final int columnWidth = (mGridView.getWidth() / numColumns) - mImageThumbSpacing;
                    mAdapter.setNumColumns(numColumns);
                    mAdapter.setItemHeight(columnWidth);
                    if (BuildConfig.DEBUG) {
                        Log.d(TAG, "onCreateView - numColumns set to " + numColumns);
                    }
                    if (Utils.hasJellyBean()) {
                        mGridView.getViewTreeObserver().removeOnGlobalLayoutListener(this);
                    } else {
                        mGridView.getViewTreeObserver().removeGlobalOnLayoutListener(this);
                    }
                }
            }
        }
    });

    return v;
}

---

From source file:com.android.projectz.teamrocket.thebusapp.activities.SearchLineActivity.java

@Override
protected void onCreate(Bundle savedInstanceState) {
    this.setTheme(getResources().getIdentifier(SharedPreferencesUtils.getSelectedTheme(this), "style",
            getPackageName()));//from w w w  .  j a v  a  2 s.c  o m
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_search_line);

    Toolbar toolbarSearchLine = (Toolbar) findViewById(R.id.toolbarSearchLine);
    setSupportActionBar(toolbarSearchLine);
    getSupportActionBar().setTitle(R.string.title_search_line);
    getSupportActionBar().setSubtitle(R.string.subtitle_search_line);
    getSupportActionBar().setDisplayHomeAsUpEnabled(true);

    ListView listView = (ListView) findViewById(R.id.fullBusList);
    String[] listText = { "Belluno - Santa Giustina - Feltre", "Belluno - Mel - Feltre",
            "Belluno - Vittorio Veneto", "Belluno - Feltre - Trento", "Linea BLU", "Linea CELESTE",
            "Linea LILLA", "Linea GIALLA", "Linea ROSSA", "Linea VERDE" };

    final String[] url = { "http://dolomitibus.it/files/orari/2016-invernale/Extra/Feltrino/LINEA13_I.pdf",
            "http://dolomitibus.it/files/orari/2016-invernale/Extra/Feltrino/LINEA20_I.pdf",
            "http://dolomitibus.it/files/orari/2016-invernale/Extra/Bellunese/LINEA41_I.pdf",
            "http://dolomitibus.it/files/orari/2016-invernale/Extra/Feltrino/Linea20-27_Trento_I.pdf",
            "http://dolomitibus.it/files/orari/2016-invernale/Urbano/BELLUNO/linea950B_I.pdf",
            "http://dolomitibus.it/files/orari/2016-invernale/Urbano/BELLUNO/linea950C_I.pdf",
            "http://dolomitibus.it/files/orari/2016-invernale/Urbano/BELLUNO/linea950J_I.pdf",
            "http://dolomitibus.it/files/orari/2016-invernale/Urbano/BELLUNO/linea950L_I.pdf",
            "http://dolomitibus.it/files/orari/2016-invernale/Urbano/BELLUNO/linea950R_I.pdf",
            "http://dolomitibus.it/files/orari/2016-invernale/Urbano/BELLUNO/linea950V_I.pdf" };

    adapter = new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1, listText);
    listView.setAdapter(adapter);
    listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
        @Override
        public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
            startBrowser(url[position]);
        }
    });

    /**
     * questa editText  fatta per filtrare le linee
     */
    EditText editText = (EditText) findViewById(R.id.inputSearch);
    editText.addTextChangedListener(new TextWatcher() {
        @Override
        public void beforeTextChanged(CharSequence s, int start, int count, int after) {
        }

        @Override
        public void onTextChanged(CharSequence s, int start, int before, int count) {
            SearchLineActivity.this.adapter.getFilter().filter(s);
        }

        @Override
        public void afterTextChanged(Editable s) {
        }
    });
}

---

From source file:com.nxt.njitong.ContactlistActivity.java

public void initviews() {
    //super.onActivityCreated(savedInstanceState);
    //T??home???appcrash
    //if(savedInstanceState != null && savedInstanceState.getBoolean("isConflict", false))
    // return;//from   www.  j  a v  a 2  s . c o  m
    context = this;
    findViewById(R.id.back).setVisibility(View.VISIBLE);
    ((TextView) findViewById(R.id.message_title)).setText(getIntent().getStringExtra("type"));
    inputMethodManager = (InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE);
    listView = (ListView) findViewById(R.id.list);
    sidebar = (Sidebar) findViewById(R.id.sidebar);
    sidebar.setListView(listView);
    //???
    blackList = EMContactManager.getInstance().getBlackListUsernames();
    contactList = new ArrayList<User>();
    // ?contactlist
    getContactList();

    //?
    query = (EditText) findViewById(R.id.query);
    String strSearch = getResources().getString(R.string.search);
    query.setHint(strSearch);
    clearSearch = (ImageButton) findViewById(R.id.search_clear);
    query.addTextChangedListener(new TextWatcher() {
        public void onTextChanged(CharSequence s, int start, int before, int count) {
            adapter.getFilter().filter(s);
            if (s.length() > 0) {
                clearSearch.setVisibility(View.VISIBLE);
            } else {
                clearSearch.setVisibility(View.INVISIBLE);

            }
        }

        public void beforeTextChanged(CharSequence s, int start, int count, int after) {
        }

        public void afterTextChanged(Editable s) {
        }
    });
    clearSearch.setOnClickListener(new OnClickListener() {
        @Override
        public void onClick(View v) {
            query.getText().clear();
        }
    });

    // adapter
    adapter = new ContactAdapter(context, R.layout.row_contact, contactList);
    listView.setAdapter(adapter);
    listView.setOnItemClickListener(new OnItemClickListener() {

        @Override
        public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
            String username = adapter.getItem(position).getUsername();
            if (Constant.NEW_FRIENDS_USERNAME.equals(username)) {
                // ?
                User user = DemoApplication.getInstance().getContactList().get(Constant.NEW_FRIENDS_USERNAME);
                user.setUnreadMsgCount(0);
                startActivity(new Intent(context, NewFriendsMsgActivity.class));
            } else if (Constant.GROUP_USERNAME.equals(username)) {
                // ??
                startActivity(new Intent(context, GroupsActivity.class));
            } else {
                // demo??
                startActivity(new Intent(context, ChatActivity.class).putExtra("userId",
                        adapter.getItem(position).getUsername()));
            }
        }
    });
    listView.setOnTouchListener(new OnTouchListener() {

        @Override
        public boolean onTouch(View v, MotionEvent event) {
            // ??
            if (getWindow()
                    .getAttributes().softInputMode != WindowManager.LayoutParams.SOFT_INPUT_STATE_HIDDEN) {
                if (getCurrentFocus() != null)
                    inputMethodManager.hideSoftInputFromWindow(getCurrentFocus().getWindowToken(),
                            InputMethodManager.HIDE_NOT_ALWAYS);
            }
            return false;
        }
    });

    ImageView addContactView = (ImageView) findViewById(R.id.iv_new_contact);
    addContactView.setVisibility(View.GONE);
    // ?
    addContactView.setOnClickListener(new OnClickListener() {

        @Override
        public void onClick(View v) {
            startActivity(new Intent(context, AddContactActivity.class));
        }
    });
    registerForContextMenu(listView);

}

---

From source file:cn.studyjams.s2.sj0132.bowenyan.mygirlfriend.nononsenseapps.notepad.ui.common.DialogEditList.java

void setup() {
    // New item hides delete button and disables OK initially
    if (getArguments().getLong(LIST_ID, -1) < 1) {
        binding.deleteButton.setVisibility(View.GONE);
        binding.buttons.dialogYes.setEnabled(false);
    }/*from www  . j a v a2  s .  co  m*/

    if (getArguments().getLong(LIST_ID, -1) > 0) {
        getDialog().setTitle(R.string.menu_managelists);
        getLoaderManager().restartLoader(0, null, new LoaderCallbacks<Cursor>() {

            @Override
            public Loader<Cursor> onCreateLoader(int arg0, Bundle arg1) {
                return new CursorLoader(getActivity(), TaskList.getUri(getArguments().getLong(LIST_ID, -1)),
                        TaskList.Columns.FIELDS, null, null, null);
            }

            @Override
            public void onLoadFinished(Loader<Cursor> arg0, Cursor c) {
                if (c.moveToFirst()) {
                    mTaskList = new TaskList(c);
                    fillViews();
                }
                // Don't need it anymore
                getLoaderManager().destroyLoader(0);
            }

            @Override
            public void onLoaderReset(Loader<Cursor> arg0) {

            }
        });
    } else {
        getDialog().setTitle(R.string.menu_createlist);
        mTaskList = new TaskList();
    }

    binding.titleField.addTextChangedListener(new TextWatcher() {
        @Override
        public void beforeTextChanged(CharSequence charSequence, int i, int i1, int i2) {

        }

        @Override
        public void onTextChanged(CharSequence charSequence, int i, int i1, int i2) {

        }

        @Override
        public void afterTextChanged(Editable editable) {
            binding.buttons.dialogYes.setEnabled(editable.length() > 0);
        }
    });

    binding.deleteButton.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {
            deleteClicked();
        }
    });

    binding.buttons.dialogNo.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {
            dismiss();
        }
    });

    binding.buttons.dialogYes.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {
            okClicked();
        }
    });
}

---

From source file:click.kobaken.rxirohaandroid_sample.presenter.AssetReceivePresenter.java

public TextWatcher textWatcher() {
    return new TextWatcher() {
        private boolean isAmountEmpty;

        @Override//  ww  w .j  a  v  a  2  s  .  c  o m
        public void beforeTextChanged(CharSequence charSequence, int i, int i1, int i2) {
            String amount = assetReceiveView.getAmount();
            isAmountEmpty = amount == null || amount.isEmpty();
        }

        @Override
        public void onTextChanged(CharSequence charSequence, int i, int i1, int i2) {
            if (isAmountEmpty && charSequence.toString().equals("0")) {
                assetReceiveView.setAmount("");
                return;
            }
            changeQR();
        }

        @Override
        public void afterTextChanged(Editable editable) {
            // nothing
        }
    };
}

---

From source file:de.greenrobot.daoexample.NoteActivity.java

protected void addUiListeners() {
    editText.setOnEditorActionListener(new OnEditorActionListener() {

        @Override/*from  ww w  .  j ava 2s  .  c  o  m*/
        public boolean onEditorAction(TextView v, int actionId, KeyEvent event) {
            if (actionId == EditorInfo.IME_ACTION_DONE) {
                addNote();
                return true;
            }
            return false;
        }
    });

    final View button = findViewById(R.id.buttonAdd);
    button.setEnabled(false);
    editText.addTextChangedListener(new TextWatcher() {

        @Override
        public void onTextChanged(CharSequence s, int start, int before, int count) {
            boolean enable = s.length() != 0;
            button.setEnabled(enable);
        }

        @Override
        public void beforeTextChanged(CharSequence s, int start, int count, int after) {
        }

        @Override
        public void afterTextChanged(Editable s) {
        }
    });

    mBtnAddAll.setOnClickListener(this);
    mBtnDeleteAll.setOnClickListener(this);
    mBtnDeleteByCount.setOnClickListener(this);
    mBtnQueryCount.setOnClickListener(this);
    mBtnQueryAll.setOnClickListener(this);
    mBtnQueryWithParam.setOnClickListener(this);
}

---

From source file:com.app.blockydemo.ui.dialogs.ScriptNameDialog.java

private void handleOnShow(final Dialog dialogEditName) {
    final Button positiveButton = ((AlertDialog) dialogEditName).getButton(AlertDialog.BUTTON_POSITIVE);
    positiveButton.setEnabled(false);/*from w w  w .  j av a 2  s. co  m*/

    EditText dialogEditText = (EditText) dialogEditName.findViewById(R.id.dialog_editor_script_name_edit_text);

    InputMethodManager inputMethodManager = (InputMethodManager) getActivity()
            .getSystemService(Context.INPUT_METHOD_SERVICE);
    inputMethodManager.showSoftInput(dialogEditText, InputMethodManager.SHOW_IMPLICIT);

    dialogEditText.addTextChangedListener(new TextWatcher() {

        @Override
        public void onTextChanged(CharSequence s, int start, int before, int count) {
        }

        @Override
        public void beforeTextChanged(CharSequence s, int start, int count, int after) {
        }

        @Override
        public void afterTextChanged(Editable editable) {

            String variableName = editable.toString();
            positiveButton.setEnabled(true);
            for (Script local_script : ProjectManager.getInstance().getCurrentSprite().getScriptList()) {
                if (local_script.getName().equals(variableName)
                        && !local_script.getName().equals(script.getName())) {
                    Toast.makeText(getActivity(), R.string.formula_editor_existing_variable, Toast.LENGTH_SHORT)
                            .show();
                    positiveButton.setEnabled(false);
                }
            }

            if (editable.length() == 0) {
                positiveButton.setEnabled(false);
            }
            if (editable.toString().equals(script.getName())) {
                positiveButton.setEnabled(false);
            }
        }
    });
    dialogEditText.setText(script.getName());

}

---

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