我正在制作泡泡排序的示范动画。单击按钮时，应该：
ImageViews中的XML完成的。ArrayList，然后使用Collections.shuffle() 当我运行应用程序时，它不会显示每个交换，而是似乎一次性播放所有内容，包括所有交换甚至是随机播放和交换。它们最终都排序了，但它不是一个视觉演示。这是下面的java（从早期实验中导入的许多不必要的库）：` 包com.propertyanimationtester;
import android.animation.AnimatorSet;
import android.animation.ObjectAnimator;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.ColorFilter;
import android.graphics.LightingColorFilter;
import android.graphics.drawable.ColorDrawable;
import android.graphics.drawable.Drawable;
import android.support.v7.app.ActionBarActivity;
import java.lang.*;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.animation.AccelerateDecelerateInterpolator;
import android.view.animation.Animation;
import android.widget.ImageView;
import java.util.Timer;
import java.lang.reflect.Field;
import java.util.ArrayList;
import java.util.Collections;
import java.util.concurrent.TimeUnit;
public class MainActivity extends ActionBarActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.menu_main, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
//noinspection SimplifiableIfStatement
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
public void startAnimation(View view) {
ImageView[] bars = new ImageView[10];
ImageView bar1 = (ImageView) this.findViewById((R.id.bar1));
ImageView bar2 = (ImageView) this.findViewById((R.id.bar2));
ImageView bar3 = (ImageView) this.findViewById((R.id.bar3));
ImageView bar4 = (ImageView) this.findViewById((R.id.bar4));
ImageView bar5 = (ImageView) this.findViewById((R.id.bar5));
ImageView bar6 = (ImageView) this.findViewById((R.id.bar6));
ImageView bar7 = (ImageView) this.findViewById((R.id.bar7));
ImageView bar8 = (ImageView) this.findViewById((R.id.bar8));
ImageView bar9 = (ImageView) this.findViewById((R.id.bar9));
ImageView bar10 = (ImageView) this.findViewById((R.id.bar10));
bars[0] = bar1;
bars[1] = bar2;
bars[2] = bar3;
bars[3] = bar4;
bars[4] = bar5;
bars[5] = bar6;
bars[6] = bar7;
bars[7] = bar8;
bars[8] = bar9;
bars[9] = bar10;
ArrayList<Integer> lengthslist = new ArrayList<Integer>(10);
for (int lengthsfiller = 0; lengthsfiller < 10; lengthsfiller++) {
lengthslist.add(lengthsfiller);
}
Collections.shuffle(lengthslist);
for (int shuffleReplacement = 0; shuffleReplacement < 10; shuffleReplacement++) {
MoveBar(view, bars[shuffleReplacement], shuffleReplacement, lengthslist.get(shuffleReplacement));
}
bubbleSort(lengthslist, view, bars);
}
public void bubbleSort(ArrayList<Integer> list, View view, ImageView[] bars)
{
for(int outerloop=0; outerloop<10; outerloop++)
{
for(int innerloop=0; innerloop < 9; innerloop++)
{
if(list.get(innerloop) > list.get(innerloop+1))
{
SwapBars(view, bars[list.get(innerloop)], bars[list.get(innerloop+1)], innerloop, innerloop + 1);
Collections.swap(list, innerloop, innerloop + 1);
}
}
}
}
public void MoveBar(View view, View bar, int currentArrayPosition, int newArrayPosition) {
float scale = getResources().getDisplayMetrics().density;
ObjectAnimator animation = ObjectAnimator.ofFloat(bar,"y", (20.0f + 30.0f*(currentArrayPosition)) * scale, (20.0f+ 30.0f*(newArrayPosition)) * scale);
AnimatorSet moveSingleBarAnimSet = new AnimatorSet();
moveSingleBarAnimSet.play(animation);
moveSingleBarAnimSet.setDuration(1000);
moveSingleBarAnimSet.setInterpolator(new AccelerateDecelerateInterpolator());
moveSingleBarAnimSet.start();
}
public void SwapBars(View view, ImageView bar1, ImageView bar2, int position1, int position2) {
float scale = getResources().getDisplayMetrics().density;
ObjectAnimator anim1 = ObjectAnimator.ofFloat(bar1,"x", 20.0f * scale, 220.0f * scale);
ObjectAnimator anim2 = ObjectAnimator.ofFloat(bar1,"y", (20.0f + 30.0f* position1) * scale, (20.0f + 30.0f * position2) * scale);
ObjectAnimator anim3 = ObjectAnimator.ofFloat(bar1,"x", 220.0f * scale, 20.0f * scale);
ObjectAnimator anim4 = ObjectAnimator.ofFloat(bar2,"x", 20.0f * scale, 220.0f * scale);
ObjectAnimator anim5 = ObjectAnimator.ofFloat(bar2,"y", (20.0f + 30.0f * position2) * scale, (20.0f + 30.0f * position1) * scale);
ObjectAnimator anim6 = ObjectAnimator.ofFloat(bar2,"x", 220.0f * scale, 20.0f * scale);
AnimatorSet animSet = new AnimatorSet();
animSet.play(anim1).before(anim2).before(anim5).with(anim4);
animSet.play(anim2).before(anim3).before(anim6).with(anim5);
animSet.play(anim3).with(anim6);
animSet.setDuration(1000);
animSet.setInterpolator(new AccelerateDecelerateInterpolator());
animSet.start();
}
} `
和XML：
<RelativeLayout 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" android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
android:paddingBottom="@dimen/activity_vertical_margin" tools:context=".MainActivity">
<ImageView
android:id="@+id/bar1"
android:layout_width="50dp"
android:layout_height="30dp"
android:src="@drawable/bar"
android:scaleType="centerCrop"
android:layout_alignParentTop="true"
android:layout_marginLeft="20dp" />
<ImageView
android:id="@+id/bar2"
android:layout_width="75dp"
android:layout_height="30dp"
android:layout_marginLeft="20dp"
android:scaleType="centerCrop"
android:layout_below="@id/bar1"
android:src="@drawable/bar"
/>
<ImageView
android:scaleType="centerCrop"
android:id="@+id/bar3"
android:layout_width="100dp"
android:layout_height="30dp"
android:layout_marginLeft="20dp"
android:layout_below="@id/bar2"
android:src="@drawable/bar"
/>
<ImageView
android:scaleType="centerCrop"
android:id="@+id/bar4"
android:layout_width="125dp"
android:layout_height="30dp"
android:layout_marginLeft="20dp"
android:layout_below="@id/bar3"
android:src="@drawable/bar"
/>
<ImageView
android:scaleType="centerCrop"
android:id="@+id/bar5"
android:layout_width="150dp"
android:layout_height="30dp"
android:layout_marginLeft="20dp"
android:layout_below="@id/bar4"
android:src="@drawable/bar"
/>
<ImageView
android:id="@+id/bar6"
android:layout_width="175dp"
android:layout_height="30dp"
android:layout_marginLeft="20dp"
android:scaleType="centerCrop"
android:layout_below="@id/bar5"
android:src="@drawable/bar"
/>
<ImageView
android:id="@+id/bar7"
android:layout_width="200dp"
android:layout_height="30dp"
android:layout_marginLeft="20dp"
android:scaleType="centerCrop"
android:layout_below="@id/bar6"
android:src="@drawable/bar"
/>
<ImageView
android:id="@+id/bar8"
android:layout_width="225dp"
android:layout_height="30dp"
android:layout_marginLeft="20dp"
android:scaleType="centerCrop"
android:layout_below="@id/bar7"
android:src="@drawable/bar"
/>
<ImageView
android:id="@+id/bar9"
android:layout_width="250dp"
android:layout_height="30dp"
android:layout_marginLeft="20dp"
android:scaleType="centerCrop"
android:layout_below="@id/bar8"
android:src="@drawable/bar"
/>
<ImageView
android:id="@+id/bar10"
android:layout_width="275dp"
android:layout_height="30dp"
android:layout_marginLeft="20dp"
android:scaleType="centerCrop"
android:layout_below="@id/bar9"
android:src="@drawable/bar"
/>
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="New Button"
android:id="@+id/button"
android:layout_alignParentBottom="true"
android:layout_centerHorizontal="true"
android:layout_marginBottom="93dp"
android:onClick="startAnimation"
/>
</RelativeLayout>
如何阻止所有动画一次播放？对于MoveBars过程而言，这一点并不重要，但绝对需要为SwapBars过程显示单独的交换。任何帮助将非常感激：）
回答问题后编辑：
使用animSet.setStartDelay（以毫秒为单位的时间）