EditText

EditText的一些属性：

textColor

Capitalize sentences每一句话第一个字母大写 words单词首字母大写 characters每一个字符都大写

Hint 没有字符输入时，默认显示字符

textColorHint hint字符的颜色

cursorVisible 光标是否显示，true显示，false不显示

Enable 是否可正常使用

Editable 是否可获得光标（但是仍然不可用）

main_xml中的代码：

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent"
android:layout_height="match_parent" android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
android:paddingBottom="@dimen/activity_vertical_margin" tools:context=".MainActivity">

<ScrollView
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:id="@+id/scrollView"
android:layout_alignParentTop="true"
android:layout_alignParentRight="true"
android:layout_alignParentEnd="true" >

<LinearLayout
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent">

<EditText
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="@+id/editText"
android:hint="任意字符"/>

<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="确定"
android:id="@+id/button"
android:onClick="Sure"/>

<EditText
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:inputType="textPassword"
android:ems="10"
android:id="@+id/editText2"
android:layout_gravity="center_horizontal"
android:hint="Please input your password"
android:textColorHint="@color/colorAccent"/>

<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="确定"
android:id="@+id/button2"
android:onClick="surePassword"/>

<EditText
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:inputType="numberSigned"
android:ems="10"
android:id="@+id/editText3"
android:hint="SignedNumber"/>

<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="确定"
android:id="@+id/button3"
android:onClick="SignedNumber"/>

<EditText
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:inputType="numberDecimal"
android:numeric="signed"
android:ems="10"
android:id="@+id/editText4"
android:hint="Decimal"/>

<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="确定"
android:id="@+id/button4"
android:onClick="Decimal"/>

<EditText
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:inputType="number"
android:ems="10"
android:id="@+id/editText5"
android:hint="Number"/>

<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="确定"
android:id="@+id/button5"
android:onClick="Number"/>
</LinearLayout>
</ScrollView>

</RelativeLayout>

activity中的代码：

package com.example.hailang.edittext;

import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.EditText;
import android.widget.Toast;

public class MainActivity extends AppCompatActivity {

EditText editText;

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);

}

public void Sure(View v)
{
editText = (EditText)findViewById(R.id.editText);
Toast.makeText(this,"The string:" + editText.getText(), Toast.LENGTH_SHORT).show(); //在屏幕中显示出来
}

public void surePassword(View v)
{
editText = (EditText)findViewById(R.id.editText2);
Toast.makeText(this,"Password:" + editText.getText(), Toast.LENGTH_SHORT).show();
}

public void SignedNumber(View v)
{
editText = (EditText)findViewById(R.id.editText3);
int x = Integer.parseInt("" + editText.getText());
x += 10;
Toast.makeText(this, "Number + 10 = " + x, Toast.LENGTH_SHORT).show();
}

public void Decimal(View v)
{
editText = (EditText)findViewById(R.id.editText4);
float x = Float.parseFloat("" + editText.getText());
x /= 10;
Toast.makeText(this, "Float / 10 = " + x, Toast.LENGTH_SHORT).show();
}

public void Number(View v)
{
editText = (EditText)findViewById(R.id.editText5);
float x = Float.parseFloat("" + editText.getText());
Toast.makeText(this,"Number:" + x, Toast.LENGTH_SHORT).show();
}
}