EditText的基本用法

1.绑定EditText
EditText.addTextChangedListener(watcher);
2.添加监听事件
TextWatcher watcher = new TextWatcher() {
        private CharSequence temp;
        private int editStart;
        private int editEnd;

        @Override
        public void onTextChanged(CharSequence s, int start, int before,
                int count) {
            // TODO Auto-generated method stub
            temp = s;
        }

        @Override
        public void beforeTextChanged(CharSequence s, int start, int count,
                int after) {
            // TODO Auto-generated method stub
            // mTextView.setText(s);//将输入的内容实时显示
        }

        @Override
        public void afterTextChanged(Editable s) {
            // TODO Auto-generated method stub
            editStart = editText.getSelectionStart();
            editEnd = editText.getSelectionEnd();
            // 当输入长度满足时
            if (temp.length() > 0) {
                // 按钮可点击背景色为蓝
                button.setBackgroundResource(R.drawable.yuanjiaobiankuang_lan);
                button.setClickable(true);
            } else {
                 // 按钮不可点击背景色为灰

                button.setBackgroundResource(R.drawable.yuanjiaobiankuang_hui);
                button.setClickable(false);
            }
        }
    };
**********************************************************************************************************************
设置密码是否显示明文：
显示密码：

editText1 .setTransformationMethod(HideReturnsTransformationMethod
                                    .getInstance());

隐藏密码：

editText1 .setTransformationMethod(PasswordTransformationMethod
                                    .getInstance());

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在android的输入框里，如果要修改光标的颜色及粗细步骤如下两步即可搞定： 

1.在资源文件drawable下新建一个光标控制shape_cursor.xml

<?xml version="1.0" encoding="utf-8"?><shapexmlns:android="http://schemas.android.com/apk/res/android"android:shape="rectangle"><sizeandroid:width="1dp" /><solidandroid:color="#008000"  /></shape>

android:textCursorDrawable="@drawable/shape_cursor"

if (count != null) {            // 设置光标位置            editText0.setSelection(count.length());        }

***************************************************************EditText在进入界面后会抢占焦点，在界面再次显示后会再次抢占焦点。原因：解决方案：android:windowSoftInputMode=“stateHidden" 再manifest.xml设置activity后第一次进入就不会在抢占焦点，但是要返回界面后不会再次抢占就需要 在EditText的父级的同级控件注意不是父级控件中找一个，设置成 android:focusable="true" android:focusableInTouchMode=“true”，这样就会截断其的抢占行为。 .............................................................................................................................设置为不自动弹出输入法：InputMethodManager imm = (InputMethodManager) getSystemService(MainActivity.this.INPUT_METHOD_SERVICE);        getWindow().setSoftInputMode(                WindowManager.LayoutParams.SOFT_INPUT_ADJUST_PAN);

getWindow().setSoftInputMode(                WindowManager.LayoutParams.SOFT_INPUT_ADJUST_RESIZE                        | WindowManager.LayoutParams.SOFT_INPUT_STATE_HIDDEN);

判断edittext是否获取焦点：

editText0.setOnFocusChangeListener(new View.OnFocusChangeListener() {

            @Override
            public void onFocusChange(View v, boolean hasFocus) {
                //hasFocus：有焦点时
        
            }
        });

设置edittext滚动：

textView0.setMovementMethod(ScrollingMovementMethod.getInstance());

隐藏滚动进度条：android:scrollbars="none"