package com.shaoxin.mytextswitcher;

import android.os.Bundle;

import android.support.annotation.Nullable;

import android.support.v7.app.AppCompatActivity;

/**

 * Created by shaoxin on 2016/12/4.

 */

public abstract class BaseActivity extends AppCompatActivity {

    public abstract void init();

    public abstract void listener();

    @Override

    protected void onCreate(@Nullable Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        init();

        listener();

    }

}

package com.shaoxin.mytextswitcher;

import android.os.Bundle;

import android.view.View;

import android.view.animation.AnimationUtils;

import android.widget.Button;

import android.widget.TextSwitcher;

import android.widget.TextView;

import android.widget.ViewSwitcher;

public class MainActivity extends BaseActivity {

    private TextSwitcher textswitcher;

    private Button btn;

    private ViewSwitcher.ViewFactory factory;

    @Override

    public void init() {

        setContentView(R.layout.activity_main);

        textswitcher = (TextSwitcher) findViewById(R.id.textswitcher);

        btn = (Button) findViewById(R.id.btn);

    }

    @Override

    public void listener() {

        factory = new ViewSwitcher.ViewFactory() {

            @Override

            public View makeView() {

                TextView textView = new TextView(MainActivity.this);

                textView.setTextSize(40);

                return textView;

            }

        };

        textswitcher.setFactory(factory);

        btn.setOnClickListener(new View.OnClickListener() {

            @Override

            public void onClick(View v) {

                textswitcher.setInAnimation(AnimationUtils

                        .loadAnimation(MainActivity.this, android.R.anim.fade_in));

                textswitcher.setInAnimation(AnimationUtils

                        .loadAnimation(MainActivity.this, android.R.anim.fade_out));

                textswitcher.setText("hello");

            }

        });

    }

    @Override

    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

    }

}

<?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:id="@+id/activity_main"

    android:layout_width="match_parent"

    android:layout_height="match_parent"

    android:orientation="vertical"

    tools:context="com.shaoxin.mytextswitcher.MainActivity">

    <Button

        android:id="@+id/btn"

        android:layout_width="match_parent"

        android:layout_height="wrap_content"

        android:text="点击出现" />

    <TextSwitcher

        android:id="@+id/textswitcher"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"/>

</LinearLayout>