@Override

    public boolean onEditorAction(TextView v, int actionId, KeyEvent event) {

        boolean isOK = true;

        switch (actionId) {

            case EditorInfo.IME_ACTION_NONE:

                Toast.makeText(mContext, "点击-->NONE", Toast.LENGTH_SHORT).show();

                break;

            case EditorInfo.IME_ACTION_GO:

                Toast.makeText(mContext, "点击-->GO", Toast.LENGTH_SHORT).show();

                break;

            case EditorInfo.IME_ACTION_SEARCH:

                Toast.makeText(mContext, "点击-->SEARCH", Toast.LENGTH_SHORT).show();

                break;

            case EditorInfo.IME_ACTION_SEND:

                Toast.makeText(mContext, "点击-->SEND", Toast.LENGTH_SHORT).show();

                break;

            case EditorInfo.IME_ACTION_NEXT:

                Toast.makeText(mContext, "点击-->NEXT", Toast.LENGTH_SHORT).show();

                break;

            default:

                isOK = false;

                break;

        }

<?xml version="1.0" encoding="utf-8"?>

<LinearLayout 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:orientation="vertical"

    android:paddingBottom="@dimen/activity_vertical_margin"

    android:paddingLeft="@dimen/activity_horizontal_margin"

    android:paddingRight="@dimen/activity_horizontal_margin"

    android:paddingTop="@dimen/activity_vertical_margin"

    tools:context="com.edwin.demokeyboard.MainActivity">

    <TextView

        android:layout_width="match_parent"

        android:layout_height="50dp"

        android:gravity="center"

        android:text="改变软键盘右下角确定键样式"

        android:textSize="20sp" />

    <EditText

        android:id="@+id/et_main_one"

        android:layout_width="match_parent"

        android:layout_height="wrap_content"

        android:hint="actionGo"

        android:imeOptions="actionGo"

        android:singleLine="true" />

    <EditText

        android:id="@+id/et_main_two"

        android:layout_width="match_parent"

        android:layout_height="wrap_content"

        android:hint="actionSearch"

        android:imeOptions="actionSearch"

        android:singleLine="true" />

    <EditText

        android:id="@+id/et_main_three"

        android:layout_width="match_parent"

        android:layout_height="wrap_content"

        android:hint="actionSend"

        android:imeOptions="actionSend"

        android:singleLine="true" />

    <EditText

        android:id="@+id/et_main_four"

        android:layout_width="match_parent"

        android:layout_height="wrap_content"

        android:hint="actionNext"

        android:imeOptions="actionNext"

        android:singleLine="true" />

</LinearLayout>