Android动画--布局动画 LayoutAnimation
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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。
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