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ID:57672111
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页数:6页
时间:2020-08-31
《Android实例EditText右下角显示剩余字数.doc》由会员上传分享,免费在线阅读,更多相关内容在教育资源-天天文库。
1、[Android实例]edittext右下角显示剩余字数packagecom.myfiftycents.personchildactivity;importjava.security.PublicKey;importjavax.security.auth.PrivateCredentialPermission;importcom.myfiftycents.R;importandroid.R.integer;importandroid.app.Activity;importandroid.os.Bundle;importandroid.text.Editable;impor
2、tandroid.text.TextWatcher;importandroid.text.InputFilter.LengthFilter;importandroid.view.View;importandroid.view.View.OnFocusChangeListener;importandroid.widget.EditText;importandroid.widget.TextView;publicclassPersonChildTextReleaseextendsActivity{ privateEditTextedit_person_text_release
3、; privateTextViewtv_person_text_release_number; privatestaticfinalintMAX_NUMBER=300; @Override protectedvoidonCreate(BundlesavedInstanceState){ //TODOAuto-generatedmethodstub super.onCreate(savedInstanceState); setContentView(R.layout.activity_person_text_release); edit_person_text_releas
4、e=(EditText)findViewById(R.id.edit_person_text_release); tv_person_text_release_number=(TextView)findViewById(R.id.tv_person_text_release_number); edit_person_text_release.clearFocus(); edit_person_text_release .setSelection(edit_person_text_release.length()); edit_person_text_release.ad
5、dTextChangedListener(mTextWatcher); finalStringstr=edit_person_text_release.getHint().toString().trim(); setLeftCount(); edit_person_text_release .setOnFocusChangeListener(newOnFocusChangeListener(){ @Override publicvoidonFocusChange(Viewarg0,booleanarg1){ if(arg1){ edit_person_
6、text_release.setHint(""); }else{ edit_person_text_release.setHint(str); } } }); } privateTextWatchermTextWatcher=newTextWatcher(){ privateintedit_start; privateintedit_end; @Override publicvoidonTextChanged(CharSequencearg0,intarg1,intarg2, intarg3){ //TODOAuto-generatedmethod
7、stub } @Override publicvoidbeforeTextChanged(CharSequencearg0,intarg1,intarg2, intarg3){ //TODOAuto-generatedmethodstub } @Override publicvoidafterTextChanged(Editablestr){ edit_start=edit_person_text_release.getSelectionStart(); edit_end=edit_person_text_releas
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