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;        }    }}
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• 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);
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• 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);                    }                });
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• 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>
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• 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>
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• 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

转自：http://blog.csdn.net/qq_28946307/article/details/51348259