Android动画--布局动画 LayoutAnimation

LayoutTransition

相关的属性值

APPEARING：当一个View在ViewGroup中出现时，对此View设置的动画

CHANGE_APPEARING：当一个View在ViewGroup中出现时，对此View对其他View位置造成影响，对其他View设置的动画。

DISAPPEARING： 当一个View在ViewGroup中消失时，对此View设置的动画。

CHANGE_DISAPPEARING： 当一个View在ViewGroup中消失时，对此View对其他View位置造成影响，对其他View设置的动画。

CHANGE： 不是由于View出现或消失造成对其他View位置造成影响，然后对其他View设置的动画。

使用默认的属性值定义的相关布局动画

public class MainActivity extends AppCompatActivity implements View.OnClickListener {
private Button button1;
private GridLayout gridLayout;

protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
init();
initListener();
LayoutTransition layoutTransition = new LayoutTransition();
layoutTransition.setAnimator(LayoutTransition.APPEARING, layoutTransition.getAnimator(LayoutTransition.APPEARING));
layoutTransition.setAnimator(LayoutTransition.CHANGE_APPEARING, layoutTransition.getAnimator(LayoutTransition.CHANGE_APPEARING));
layoutTransition.setAnimator(LayoutTransition.CHANGE_DISAPPEARING, layoutTransition.getAnimator(LayoutTransition.CHANGE_DISAPPEARING));
layoutTransition.setAnimator(LayoutTransition.CHANGING, layoutTransition.getAnimator(LayoutTransition.CHANGING));
layoutTransition.setAnimator(LayoutTransition.DISAPPEARING, layoutTransition.getAnimator(LayoutTransition.DISAPPEARING));
gridLayout.setLayoutTransition(layoutTransition);
}

private void initListener() {
button1.setOnClickListener(this);
}

private void init() {
button1 = (Button) findViewById(R.id.button1);
gridLayout = (GridLayout) findViewById(R.id.gridLayout);
}

@Override
public void onClick(View v) {
switch (v.getId()) {
case R.id.button1:
TextView textView = new TextView(this);
textView.setText("你这个小碧池");
textView.setLayoutParams(new LinearLayout.LayoutParams(LinearLayout.LayoutParams.WRAP_CONTENT, LinearLayout.LayoutParams.WRAP_CONTENT));
gridLayout.addView(textView,0);
textView.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
gridLayout.removeView(v);
}
});
break;
}
}
}

我们来看相关的代码

LayoutTransition layoutTransition = new LayoutTransition();
layoutTransition.setAnimator(LayoutTransition.APPEARING, layoutTransition.getAnimator(LayoutTransition.APPEARING));
layoutTransition.setAnimator(LayoutTransition.CHANGE_APPEARING, layoutTransition.getAnimator(LayoutTransition.CHANGE_APPEARING));
layoutTransition.setAnimator(LayoutTransition.CHANGE_DISAPPEARING, layoutTransition.getAnimator(LayoutTransition.CHANGE_DISAPPEARING));
layoutTransition.setAnimator(LayoutTransition.CHANGING, layoutTransition.getAnimator(LayoutTransition.CHANGING));
layoutTransition.setAnimator(LayoutTransition.DISAPPEARING, layoutTransition.getAnimator(LayoutTransition.DISAPPEARING));
gridLayout.setLayoutTransition(layoutTransition);

这里定义的是布局动画的各个属性，都是使用的默认值，然后为对应的gridLayout设定布局动画

TextView textView = new TextView(this);
textView.setText("你这个小碧池");
textView.setLayoutParams(new LinearLayout.LayoutParams(LinearLayout.LayoutParams.WRAP_CONTENT, LinearLayout.LayoutParams.WRAP_CONTENT));
gridLayout.addView(textView,0);
textView.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
gridLayout.removeView(v);
}
});

这里我们动态的添加TextView控件

同时为TextView设置相应的点击事件，当被点击，就从gridLayout中移除出去

使用自定义属性值定义的相关布局动画

代码如下

public class SecActivity extends AppCompatActivity implements OnClickListener {

private Button button_sec;
private CheckBox checkBox1, checkBox2, checkBox3, checkBox4;
private GridLayout gridLayout;
private int index;

protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_sec);
init();
}

private void init() {
button_sec = (Button) findViewById(R.id.button_sec);
button_sec.setOnClickListener(this);
checkBox1 = (CheckBox) findViewById(R.id.checkBox);
checkBox2 = (CheckBox) findViewById(R.id.checkBox2);
checkBox3 = (CheckBox) findViewById(R.id.checkBox3);
checkBox4 = (CheckBox) findViewById(R.id.checkBox4);
gridLayout = (GridLayout) findViewById(R.id.gridLayout_sec);
}

@Override
public void onClick(View v) {
switch (v.getId()) {
case R.id.button_sec:
index++;
Button button = new Button(this);
button.setText("我是按钮" + index);
button.setLayoutParams(new LinearLayout.LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.WRAP_CONTENT));
button.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
gridLayout.setLayoutTransition(getLayoutTransition());
gridLayout.removeView(v);
}
});
gridLayout.setLayoutTransition(getLayoutTransition());
gridLayout.addView(button, 0);
break;
}
}

//与使用自定义属性最大的不同在于此处，我们分别为APPEARING、DISAPPEARING指定不同的效果
public LayoutTransition getLayoutTransition() {
LayoutTransition layoutTransition = new LayoutTransition();
ObjectAnimator objectAnimator = ObjectAnimator.ofFloat(gridLayout, "scaleX", 1, 0, 1).setDuration(2000);
ObjectAnimator objectAnimator2 = ObjectAnimator.ofFloat(gridLayout, "ScaleY", 1, 0, 1).setDuration(2000);
if (checkBox1.isChecked()) {
layoutTransition.setAnimator(LayoutTransition.APPEARING, objectAnimator);
}
if (checkBox2.isChecked()) {
layoutTransition.setAnimator(LayoutTransition.DISAPPEARING, objectAnimator2);
}
if (checkBox3.isChecked()) {
//设置当新控件添加后，受影响的四个上下左右的移动
PropertyValuesHolder holderTop = PropertyValuesHolder.ofInt("top", 0, 1);
PropertyValuesHolder holderBottom = PropertyValuesHolder.ofInt("bottom", 0, 1);
PropertyValuesHolder holderLeft = PropertyValuesHolder.ofInt("left", 0, 1);
PropertyValuesHolder holderRight = PropertyValuesHolder.ofInt("right", 0, 1);
final ObjectAnimator objectAnimator1 = new ObjectAnimator().ofPropertyValuesHolder(this, holderTop, holderBottom, holderLeft, holderRight).setDuration(2000);
objectAnimator1.addListener(new Animator.AnimatorListener() {
@Override
public void onAnimationStart(Animator animation) {
}

@Override
public void onAnimationEnd(Animator animation) {
//这是设置其他子控件的显示效果的代码
View view = (View) ((ObjectAnimator) animation).getTarget();
//对其他的子控件进行设置，移动到相应的位置后的动画，我这里设置的是旋转
view.setAnimation(AnimationUtils.loadAnimation(getApplicationContext(), R.anim.add));

//                    1代表原来大小，即表示不改变大小，一般这个用不到
//                    view.setScaleX(1);
//                    view.setScaleY(1);
}

@Override
public void onAnimationCancel(Animator animation) {

}

@Override
public void onAnimationRepeat(Animator animation) {

}
});
layoutTransition.setAnimator(LayoutTransition.CHANGE_DISAPPEARING, objectAnimator1);
}
if (checkBox4.isChecked()) {
//下面四个方法最好用ofInt，如果用ofFloat动画会出错，效果不理想，具体原因我也不太清楚
PropertyValuesHolder holderTop = PropertyValuesHolder.ofInt("top", 0, 1);
PropertyValuesHolder holderBottom = PropertyValuesHolder.ofInt("bottom", 0, 1);
PropertyValuesHolder holderLeft = PropertyValuesHolder.ofInt("left", 0, 1);
PropertyValuesHolder holderRight = PropertyValuesHolder.ofInt("right", 0, 1);
final ObjectAnimator objectAnimator1 = new ObjectAnimator().ofPropertyValuesHolder(this, holderTop, holderBottom, holderLeft, holderRight).setDuration(2000);
objectAnimator1.addListener(new Animator.AnimatorListener() {
@Override
public void onAnimationStart(Animator animation) {
}

@Override
public void onAnimationEnd(Animator animation) {
//这是设置其他子控件的大小的代码
View view = (View) ((ObjectAnimator) animation).getTarget();
//对其他的子控件进行设置，移动到相应的位置后的动画，我这里设置的是旋转
view.setAnimation(AnimationUtils.loadAnimation(getApplicationContext(), R.anim.add));

//                    1代表原来大小，即表示不改变大小，一般这个用不到
//                    view.setScaleX(1);
//                    view.setScaleY(1);
}

@Override
public void onAnimationCancel(Animator animation) {

}

@Override
public void onAnimationRepeat(Animator animation) {

}
});
layoutTransition.setAnimator(LayoutTransition.CHANGE_APPEARING, objectAnimator1);
}
return layoutTransition;
}
}

布局动画的使用

在xml文件中定义使用

xml文件定义在res文件夹下新建的anim文件夹下

translate.xml

<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android"
android:duration="2000"
android:interpolator="@android:anim/accelerate_decelerate_interpolator">

<translate
android:fromXDelta="-100%"
android:toXDelta="0"></translate>
</set>

layoutanimation_my.xml

其中的delay=”0.5”，表示的是animation=”@anim/translate”对应的xml文件中的duration*delay的时间为延时时间

<?xml version="1.0" encoding="utf-8"?>
<layoutAnimation xmlns:android="http://schemas.android.com/apk/res/android"
android:animationOrder="normal"
android:delay="0.5"
android:animation="@anim/translate">
</layoutAnimation>

定义完毕xml文件后，我们就需要在布局文件中进行引用就可以了

<ListView
android:id="@+id/listView"
android:layout_width="match_parent"
android:layout_height="0dip"
android:layout_weight="1"
android:layoutAnimation="@anim/layoutanimation_my"></ListView>

在代码中定义使用

- 代码大概就是上图这样的逻辑，这里博主就偷下懒不再敲了，效果和上面的效果图一致。