关于点击红点,图标扇形出现的代码实现,贴上自己的代码
虽然还有很多需要优化的地方,但也算实现了这个功能,需要的童鞋可以参考下
import android.animation.AnimatorSet;
import android.animation.ObjectAnimator;
import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.view.animation.BounceInterpolator;
import android.widget.ImageView;
import android.widget.Toast;
import java.util.ArrayList;
import java.util.List;
public class MainActivity extends Activity implements View.OnClickListener {
//创建数组存储图片id
private int[] res = {R.id.imageView_a, R.id.imageView_b, R.id.imageView_c, R.id.imageView_d,
R.id.imageView_e, R.id.imageView_f, R.id.imageView_g, R.id.imageView_h};
//创建列表list存储图片
private List<ImageView> imageViewList = new ArrayList<ImageView>();
private boolean flag = true;
private float angle;
private final int r = 380;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.my_activity);
for (int i = 0; i < res.length; i++) {
ImageView imageView = (ImageView) findViewById(res[i]);
imageView.setOnClickListener(this);
imageViewList.add(imageView);
}
}
@Override
public void onClick(View v) {
switch (v.getId()) {
case R.id.imageView_a:
if (flag) {
startAnim();
} else {
closeAnim();
}
break;
default:
Toast.makeText(MainActivity.this, "clicked" + v.getId(), Toast.LENGTH_SHORT).show();
break;
}
}
private void startAnim() {
angle = (float) Math.PI / (2 * (res.length - 2));
for (int i = 1; i < res.length; i++) {
float xLength = (float) (r * Math.sin((i - 1) * angle));
float yLength = (float) (r * Math.cos((i - 1) * angle));
ObjectAnimator animator1 = ObjectAnimator.ofFloat(imageViewList.get(i),
"translationX", 0F, -xLength);
ObjectAnimator animator2 = ObjectAnimator.ofFloat(imageViewList.get(i),
"translationY", 0F, -yLength);
AnimatorSet set = new AnimatorSet();
set.playTogether(animator1, animator2);
set.setDuration(500);
set.setInterpolator(new BounceInterpolator());
set.setStartDelay(i * 200);
set.start();
flag = false;
}
}
private void closeAnim() {
angle = (float) Math.PI / (2 * (res.length - 2));
for (int i = 1; i < res.length; i++) {
float xLength = (float) (r * Math.sin((i - 1) * angle));
float yLength = (float) (r * Math.cos((i - 1) * angle));
ObjectAnimator animator1 = ObjectAnimator.ofFloat(imageViewList.get(i),
"translationX", -xLength, 0F);
ObjectAnimator animator2 = ObjectAnimator.ofFloat(imageViewList.get(i),
"translationY", -yLength, 0F);
AnimatorSet set = new AnimatorSet();
set.playTogether(animator1, animator2);
set.setDuration(500);
set.setInterpolator(new BounceInterpolator());
set.setStartDelay((res.length-i) * 200);
set.start();
flag = true;
}
}
}
觉得有用的话,记得采纳回答哟
