直播平台制作，使用动画设置ProgressBar进度

布局文件：

<br><?xml version="1.0" encoding="utf-8"?><br><LinearLayout<br>    xmlns:android="http://schemas.android.com/apk/res/android"<br>    xmlns:app="http://schemas.android.com/apk/res-auto"<br>    xmlns:tools="http://schemas.android.com/tools"<br>    android:layout_width="match_parent"<br>    android:layout_height="match_parent"<br>    android:orientation="vertical"<br>    tools:context="com.yhx.app.progressbardemo.MainActivity"><br>    <ProgressBar<br>        android:layout_marginTop="20dp"<br>        android:id="@+id/bar"<br>        android:layout_width="match_parent"<br>        android:layout_height="8dp"<br>        style="?android:attr/progressBarStyleHorizontal"<br>        android:progress="10"<br>        android:max="100"><br>    </ProgressBar<br>      ><br>    <Button<br>        android:hint="开始"<br>       android:onClick="show"<br>        android:layout_marginTop="50dp"<br>        android:layout_width="match_parent"<br>        android:layout_height="50dp"/><br>    <TextView<br>        android:id="@+id/tv_bar"<br>        android:layout_marginTop="20dp"<br>        android:layout_width="100dp"<br>        android:text="0"<br>        android:gravity="center"<br>        android:textSize="38dp"<br>        android:layout_gravity="center"<br>        android:layout_height="100dp"/><br>    <Button<br>        android:hint="开始"<br>        android:onClick="tvshow"<br>        android:layout_marginTop="50dp"<br>        android:layout_width="match_parent"<br>        android:layout_height="50dp"/><br></LinearLayout><br> 

Activity:

<br>public class MainActivity extends AppCompatActivity {<br>    private ProgressBar mProgressBar;<br>    TextView mtv_bar;<br>    @Override<br>    protected void onCreate(Bundle savedInstanceState) {<br>        super.onCreate(savedInstanceState);<br>        setContentView(R.layout.activity_main);<br>        mProgressBar = (ProgressBar) findViewById(R.id.bar);<br>        mtv_bar = (TextView) findViewById(R.id.tv_bar);<br>        setAnimation(mProgressBar, 100);<br>    }<br>    private void setAnimation(final ProgressBar view, final int mProgressBar) {<br>        ValueAnimator animator = ValueAnimator.ofInt(0, mProgressBar).setDuration(5000);<br>        animator.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() {<br>            @Override<br>            public void onAnimationUpdate(ValueAnimator valueAnimator) {<br>                view.setProgress((int) valueAnimator.getAnimatedValue());<br>            }<br>        });<br>        animator.start();<br>    }<br>    private void setTvAnimation(final TextView view, final int mProgressBar) {<br>        ValueAnimator animator = ValueAnimator.ofInt(0, mProgressBar).setDuration(5000);<br>        animator.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() {<br>            @Override<br>            public void onAnimationUpdate(ValueAnimator valueAnimator) {<br>                view.setText(String.valueOf(valueAnimator.getAnimatedValue()));<br>            }<br>        });<br>        animator.start();<br>    }<br>    public void show(View view) {<br>        setAnimation(mProgressBar, 100);<br>    }<br>    public  void tvshow(View view){<br>        setTvAnimation(mtv_bar,240);<br>    }<br>}