问题描述
怎么能让下面的view顶上来,LinearLayout布局，使用mTopView.setVisibility(View.GONE)下面的布局可以自动上移，为什么动画不可以？
private void hideViews() {mTopView.setTranslationY(0);mTopView.animate().translationY(-mTopView.getHeight()).setInterpolator(new AccelerateInterpolator(2)).setStartDelay(50).setDuration(500).start(); }
问题解答
回答1：你执行完动画后.setVisibility(View.GONE)了么
回答2：public class MainActivity extends AppCompatActivity { ImageView view1,view2;//linearLayout当中竖直排列的两个imageView AlphaAnimation animationOut,animationIn; @Override protected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);view1 = (ImageView) findViewById(R.id.view_1);view2 = (ImageView) findViewById(R.id.view_2);initAnimation();view1.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { ObjectAnimator.ofInt(view2,'top',view2.getTop()-view1.getHeight()).setDuration(500).start(); ObjectAnimator.ofInt(view2,'bottom',view2.getBottom()-view1.getHeight()).setDuration(500).start(); view1.startAnimation(animationOut); }});view2.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) {if(view1.getVisibility() == View.GONE){ ObjectAnimator.ofInt(view2,'top',view2.getTop()+view1.getHeight()).setDuration(500).start(); ObjectAnimator.ofInt(view2,'bottom',view2.getBottom()+view1.getHeight()).setDuration(500).start(); view1.startAnimation(animationIn);} }}); } private void setClickable(boolean which){view1.setClickable(which);view2.setClickable(which); } private void initAnimation(){animationOut = new AlphaAnimation(1f,0f);animationOut.setDuration(500);animationOut.setAnimationListener(new Animation.AnimationListener() { @Override public void onAnimationStart(Animation animation) {setClickable(false); } @Override public void onAnimationEnd(Animation animation) {view1.setVisibility(View.GONE);setClickable(true); } @Override public void onAnimationRepeat(Animation animation) { }});//animationIn = new AlphaAnimation(0f,1f);animationIn.setDuration(500);animationIn.setAnimationListener(new Animation.AnimationListener() { @Override public void onAnimationStart(Animation animation) {setClickable(false); } @Override public void onAnimationEnd(Animation animation) {view1.setVisibility(View.VISIBLE);setClickable(true); } @Override public void onAnimationRepeat(Animation animation) { }}); }}
顺便为需要隐藏的view加了个alpha效果，这样看起来自然一些。
回答3：用属性动画可以改变view本身
