本文实例为大家分享了Android自定义textview实现跑马灯效果的具体代码，供大家参考，具体内容如下

xml布局

<?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:id="@+id/activity_main" android:layout_width="match_parent" android:layout_height="match_parent" tools:context="myandroidstituds.test3.MainActivity"> <LinearLayout android:layout_centerInParent="true" android:layout_width="180dp" android:layout_height="50dp"> <TextView android:padding="10dp" android:layout_width="match_parent" android:layout_height="match_parent" android:background="#55000000" /> </LinearLayout> <myandroidstituds.test3.MarqueeLayout android:id="@+id/mar" android:layout_centerInParent="true" android:layout_width="180dp" android:layout_height="50dp"> <TextView android:id="@+id/tv1" android:textSize="20sp" android:gravity="center" android:background="@android:color/transparent" android:layout_width="match_parent" android:layout_height="match_parent" android:textColor="#000000" android:visibility="gone" android:text="两个黄鹂鸣翠柳" /> <TextView android:id="@+id/tv2" android:textSize="20sp" android:background="@android:color/transparent" android:gravity="center" android:layout_width="match_parent" android:layout_height="match_parent" android:textColor="#000000" android:visibility="gone" android:text="一行白鹭上青天" /> </myandroidstituds.test3.MarqueeLayout></RelativeLayout>

自定义MarqueeLayout

public class MarqueeLayout extends FrameLayout implements ViewTreeObserver.OnGlobalLayoutListener{ private View view1; private View view2; public int interval = 2000; public MarqueeLayout(Context context) { this(context,null); } public MarqueeLayout(Context context, AttributeSet attrs) { this(context, attrs,0); } public MarqueeLayout(Context context, AttributeSet attrs, int defStyleAttr) { super(context, attrs, defStyleAttr); getViewTreeObserver().addOnGlobalLayoutListener(this); } @Override protected void onFinishInflate() { super.onFinishInflate(); if(getChildCount()!=2){ throw new IllegalArgumentException("MarqueeLayout should have 2 child!"); } view1 = getChildAt(0); view2 = getChildAt(1); } @Override public void onGlobalLayout() { getViewTreeObserver().removeGlobalOnLayoutListener(this); view2.setTranslationY(view2.getHeight()); } private Handler handler = new Handler(){ @Override public void handleMessage(Message msg) { super.handleMessage(msg); startAnim(); } }; boolean isAniming = false; /** * 开始滚动 */ public void start(){ getViewTreeObserver().addOnGlobalLayoutListener(new ViewTreeObserver.OnGlobalLayoutListener() { @Override public void onGlobalLayout() { getViewTreeObserver().removeGlobalOnLayoutListener(this); startAnim(); } }); } public void startAnim(){ if(isAniming)return; isAniming = true; int targetY1 = view1.getTranslationY()==0?-view1.getHeight():0; int targetY2 = view2.getTranslationY()==0?-view2.getHeight():0; ViewCompat.animate(view1) .translationY(targetY1) .setListener(new ViewPropertyAnimatorListenerAdapter(){ @Override public void onAnimationEnd(View view) { super.onAnimationEnd(view); //移动到下方 resetView(view); } }) .setDuration(400).start(); ViewCompat.animate(view2) .translationY(targetY2) .setListener(new ViewPropertyAnimatorListenerAdapter(){ @Override public void onAnimationEnd(View view) { super.onAnimationEnd(view); //移动到下方 resetView(view); isAniming = false; handler.sendEmptyMessageDelayed(0,interval); } }) .setDuration(400) .start(); } private void resetView(View view) { if(view.getTranslationY()==-view.getHeight()){ view.setTranslationY(view.getHeight()*2); } } public void stop(){ handler.removeCallbacksAndMessages(null); }}

在Activity中的使用

public class MainActivity extends AppCompatActivity { @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); MarqueeLayout marqueeLayout = (MarqueeLayout) findViewById(R.id.mar); TextView tv1 = (TextView) findViewById(R.id.tv1); TextView tv2 = (TextView) findViewById(R.id.tv2); marqueeLayout.start(); tv1.setVisibility(tv1.getTranslationY() == 0 ? View.VISIBLE : View.GONE); tv2.setVisibility(tv2.getTranslationY() == 0 ? View.VISIBLE : View.GONE); }}

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持。