Android中使用 AutoCompleteTextView 实现手机号格式化附带清空历史的操作

    android:layout_width="fill_parent"

    android:layout_height="fill_parent"

    android:orientation="vertical">

    android:layout_width="fill_parent"

    android:layout_height="wrap_content"

    android:text="Please input:"/>

    android:id="@+id/actv"

    android:layout_width="fill_parent"

    android:layout_height="wrap_content"/>

importandroid.app.Activity;

importandroid.os.Bundle;

importandroid.text.Editable;

importandroid.text.Selection;

importandroid.text.TextWatcher;

importandroid.view.View;

importandroid.widget.AdapterView;

importandroid.widget.AdapterView.OnItemClickListener;

importandroid.widget.ArrayAdapter;

importandroid.widget.AutoCompleteTextView;

importandroid.widget.EditText;

importandroid.widget.TextView;

importandroid.widget.Toast;

publicclassMainActivityextendsActivity {

privateAutoCompleteTextView mAutoCompleteTextView;

privateString[] mAutoStrs =newString[] {"138 0013 8000","13800138001",

        "13800138002","13800138003","13800138004","138 0013 800清除记录"};

privateString mBeforeTextChangedStr ="";

publicvoidonCreate(Bundle savedInstanceState) {

  super.onCreate(savedInstanceState);

  setContentView(R.layout.activity_main);

  mAutoCompleteTextView = (AutoCompleteTextView) findViewById(R.id.actv);

  ArrayAdapter_arrayAdapter =newArrayAdapter(this,

                android.R.layout.simple_dropdown_item_1line, mAutoStrs);

  mAutoCompleteTextView.setAdapter(_arrayAdapter);

  mAutoCompleteTextView.setThreshold(1);// 设置输入一个字符就提示

  mAutoCompleteTextView.setOnItemClickListener(newOnItemClickListener() {

     @Override

     publicvoidonItemClick(AdapterView arg0, View arg1,intarg2,

               longarg3) {

        String _clearStr ="";

        if(arg1instanceofTextView) {

          _clearStr = ((TextView) arg1).getText().toString();

         }

        if(_clearStr.equals("138 0013 800清楚记录")) {

          mAutoCompleteTextView.setText(mBeforeTextChangedStr);

          Editable _editable = mAutoCompleteTextView.getText();

          Selection.setSelection(_editable, _editable.length());

          Toast.makeText(MainActivity.this,"清除成功了!",

          Toast.LENGTH_LONG).show();

        }

    }

  });

  phoneNumAddSpaceOne(mAutoCompleteTextView);

}

/**

* 手机号格式化代码

*

* @param editText

* EditText对象

*/

publicvoidphoneNumAddSpaceOne(finalEditText editText) {

  editText.addTextChangedListener(newTextWatcher() {

    privateintstart;

    privateintbefore;

    privateStringBuilder stringBuilder;

    @Override

    publicvoidonTextChanged(CharSequence s,intstart,intbefore,

                 intcount) {

      this.start = start;

      this.before = before;

    }

    @Override

    publicvoidbeforeTextChanged(CharSequence s,intstart,intcount,

      intafter) {

    }

    @Override

    publicvoidafterTextChanged(Editable s) {

      String _str = s.toString();

      if(!isNumeric(_str.replace(" ",""))) {

        return;

      }

      mBeforeTextChangedStr = _str;

      // 手机号格式化xxx xxxx xxxx

      if(s ==null|| s.length() ==0)

        return;

      if(stringBuilder ==null) {

        stringBuilder =newStringBuilder();

      }else{

        stringBuilder.delete(0, stringBuilder.length());

      }

      for(inti =0; i < s.length(); i++) {

      if(i !=3&& i !=8&& s.charAt(i) ==' ') {

        continue;

      }else{

        stringBuilder.append(s.charAt(i));

      if((stringBuilder.length() ==4|| stringBuilder

        .length() ==9)&& stringBuilder.charAt(stringBuilder.length() -1) !=' ') {

      stringBuilder.insert(stringBuilder.length() -1,' ');

      }

    }

  }

  if(!stringBuilder.toString().equals(s.toString())) {

    intindex = start +1;

   if(stringBuilder.charAt(start) ==' ') {

  if(before ==0) {

    index++;

  }else{

    index--;

  }

}else{

  if(before ==1) {

    index--;

  }

}

  editText.setText(stringBuilder.toString());

  editText.setSelection(index);

}

}

});

}

/**

* 判断字符串是否是数字

*

* @param str

* 需要判断的字符串

* @return

*/

publicbooleanisNumeric(String str) {

  for(inti = str.length(); --i >=0;) {

    intchr = str.charAt(i);

    if(chr<48|| chr="">57)

    returnfalse;

    }

    returntrue;

  }

}