Android使用动画设置ProgressBar进度 Android使用动画设置ProgressBar进度的方法
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需求场景:当我们在使用ProgressBar的时候,希望有进度加载的效果,此时我们传统的做法是使用Thread线程来实现,下面我们用属性动画来实现,简单粗暴。。哈哈哈
布局文件:
<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:app="http://schemas.android.com/apk/res-auto" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical" tools:context="com.yhx.app.progressbardemo.MainActivity"> <ProgressBar android:layout_marginTop="20dp" android:id="@+id/bar" android:layout_width="match_parent" android:layout_height="8dp" style="?android:attr/progressBarStyleHorizontal" android:progress="10" android:max="100"> </ProgressBar> <Button android:hint="开始" android:onClick="show" android:layout_marginTop="50dp" android:layout_width="match_parent" android:layout_height="50dp"/> <TextView android:id="@+id/tv_bar" android:layout_marginTop="20dp" android:layout_width="100dp" android:text="0" android:gravity="center" android:textSize="38dp" android:layout_gravity="center" android:layout_height="100dp"/> <Button android:hint="开始" android:onClick="tvshow" android:layout_marginTop="50dp" android:layout_width="match_parent" android:layout_height="50dp"/> </LinearLayout>
Activity:
public class MainActivity extends AppCompatActivity { private ProgressBar mProgressBar; TextView mtv_bar; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); mProgressBar = (ProgressBar) findViewById(R.id.bar); mtv_bar = (TextView) findViewById(R.id.tv_bar); setAnimation(mProgressBar, 100); } private void setAnimation(final ProgressBar view, final int mProgressBar) { ValueAnimator animator = ValueAnimator.ofInt(0, mProgressBar).setDuration(5000); animator.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() { @Override public void onAnimationUpdate(ValueAnimator valueAnimator) { view.setProgress((int) valueAnimator.getAnimatedValue()); } }); animator.start(); } private void setTvAnimation(final TextView view, final int mProgressBar) { ValueAnimator animator = ValueAnimator.ofInt(0, mProgressBar).setDuration(5000); animator.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() { @Override public void onAnimationUpdate(ValueAnimator valueAnimator) { view.setText(String.valueOf(valueAnimator.getAnimatedValue())); } }); animator.start(); } public void show(View view) { setAnimation(mProgressBar, 100); } public void tvshow(View view){ setTvAnimation(mtv_bar,240); } }
效果图:
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