最近試著做了個Android 帶有彈出收縮動畫的扇形菜單,留個筆記記錄一下。
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效果如下
public class MainActivity extends AppCompatActivity implements View.OnClickListener { private ImageView imgPublish; private TextView textView1; private TextView textView2; private boolean isMenuOpen = false; private List<TextView> textViews = new ArrayList<>(); @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); imgPublish = (ImageView) findViewById(R.id.img_publish); textView1 = (TextView) findViewById(R.id.tv_1); textView2 = (TextView) findViewById(R.id.tv_2); textViews.add(textView1); textViews.add(textView2); imgPublish.setOnClickListener(this); } @Override public void onClick(View v) { switch (v.getId()) { case R.id.img_publish: if (!isMenuOpen) { showOpenAnim(80); imgPublish.setImageResource(R.mipmap.publish_select); }else { showCloseAnim(80); imgPublish.setImageResource(R.mipmap.fabu); } break; } } //打開扇形菜單的屬性動畫, dp為半徑長度 private void showOpenAnim(int dp) { textView1.setVisibility(View.VISIBLE); textView2.setVisibility(View.VISIBLE); //for循環來開始小圖標的出現動畫 for (int i = 0; i < textViews.size(); i++) { AnimatorSet set = new AnimatorSet(); //標題1與x軸負方向角度為20°,標題2為100°,轉換為弧度 double a = -Math.cos(20 * Math.PI / 180 * (i * 2 + 1)); double b = -Math.sin(20 * Math.PI / 180 * (i * 2 + 1)); double x = a * dip2px(dp); double y = b * dip2px(dp); set.playTogether( ObjectAnimator.ofFloat(textViews.get(i), "translationX", (float) (x * 0.25), (float) x), ObjectAnimator.ofFloat(textViews.get(i), "translationY", (float) (y * 0.25), (float) y) , ObjectAnimator.ofFloat(textViews.get(i), "alpha", 0, 1).setDuration(2000) ); set.setInterpolator(new BounceInterpolator()); set.setDuration(500).setStartDelay(100); set.start(); set.addListener(new Animator.AnimatorListener() { @Override public void onAnimationStart(Animator animation) { } @Override public void onAnimationEnd(Animator animation) { //菜單狀態置打開 isMenuOpen = true; } @Override public void onAnimationCancel(Animator animation) { } @Override public void onAnimationRepeat(Animator animation) { } }); } //轉動加號大圖標本身45° ObjectAnimator rotate = ObjectAnimator.ofFloat(imgPublish, "rotation", 0, 90).setDuration(300); rotate.setInterpolator(new BounceInterpolator()); rotate.start(); } //關閉扇形菜單的屬性動畫,參數與打開時相反 private void showCloseAnim(int dp) { //for循環來開始小圖標的出現動畫 for (int i = 0; i < textViews.size(); i++) { AnimatorSet set = new AnimatorSet(); double a = -Math.cos(20 * Math.PI / 180 * (i * 2 + 1)); double b = -Math.sin(20 * Math.PI / 180 * (i * 2 + 1)); double x = a * dip2px(dp); double y = b * dip2px(dp); set.playTogether( ObjectAnimator.ofFloat(textViews.get(i), "translationX", (float) x, (float) (x * 0.25)), ObjectAnimator.ofFloat(textViews.get(i), "translationY", (float) y, (float) (y * 0.25)), ObjectAnimator.ofFloat(textViews.get(i), "alpha", 1, 0).setDuration(2000) ); // set.setInterpolator(new AccelerateInterpolator()); set.setDuration(500); set.start(); set.addListener(new Animator.AnimatorListener() { @Override public void onAnimationStart(Animator animation) { } @Override public void onAnimationEnd(Animator animation) { textView1.setVisibility(View.GONE); textView2.setVisibility(View.GONE); //菜單狀態置關閉 isMenuOpen = false; } @Override public void onAnimationCancel(Animator animation) { } @Override public void onAnimationRepeat(Animator animation) { } }); } //轉動加號大圖標本身45° ObjectAnimator rotate = ObjectAnimator.ofFloat(imgPublish, "rotation", 0, 90).setDuration(300); rotate.setInterpolator(new BounceInterpolator()); rotate.start(); } private int dip2px(int value) { float density = getResources() .getDisplayMetrics().density; return (int) (density * value + 0.5f); } }
布局文件
<?xml version="1.0" encoding="utf-8"?> <FrameLayout 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" tools:context="com.example.lina.animationapplication.MainActivity"> <TextView android:id="@+id/tv_1" android:layout_width="40dp" android:layout_height="40dp" android:layout_gravity="bottom|end" android:layout_marginBottom="40dp" android:layout_marginRight="40dp" android:gravity="center" android:text="標題1" android:textColor="#ffffff" android:visibility="gone" android:background="@drawable/circle_purple" /> <TextView android:id="@+id/tv_2" android:layout_width="40dp" android:layout_height="40dp" android:layout_gravity="bottom|end" android:layout_marginBottom="40dp" android:layout_marginRight="40dp" android:gravity="center" android:text="標題2" android:textColor="#ffffff" android:visibility="gone" android:background="@drawable/circle_orange"/> <ImageView android:id="@+id/img_publish" android:layout_width="60dp" android:layout_height="60dp" android:layout_gravity="bottom|end" android:layout_marginBottom="35dp" android:layout_marginRight="35dp" android:src="@mipmap/fabu" /> </FrameLayout>
circle_purple.xml
<?xml version="1.0" encoding="utf-8"?> <shape xmlns:android="http://schemas.android.com/apk/res/android" android:shape="oval"> <solid android:color="#5d2a89" /> </shape>
參考
Android開罐頭———快速打造扇形衛星菜單
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當前標題:Android帶有彈出收縮動畫的扇形菜單實例
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