Android 如何设置高度变化的动画
我的应用程序中有一张简单的卡片,当用户点击它时,我正在更改高度。这个高度的变化我希望是动画,一个平滑的高度变化Android 如何设置高度变化的动画,android,animation,Android,Animation,我的应用程序中有一张简单的卡片,当用户点击它时,我正在更改高度。这个高度的变化我希望是动画,一个平滑的高度变化 @OnClick({R.id.emptyDescription}) public void onClick(View view) { switch (view.getId()) { case R.id.emptyDescription: if(isCardCollapsed){ emptyDescript
@OnClick({R.id.emptyDescription})
public void onClick(View view) {
switch (view.getId()) {
case R.id.emptyDescription:
if(isCardCollapsed){
emptyDescription.setMinimumHeight(400);
cancelSaveLinear.setVisibility(View.VISIBLE);
editDescription.setVisibility(View.GONE);
isCardCollapsed = false;
} else {
emptyDescription.setMinimumHeight(100);
cancelSaveLinear.setVisibility(View.GONE);
editDescription.setVisibility(View.VISIBLE);
isCardCollapsed = true;
}
break;
case R.id.card_view:
break;
}
}
我该怎么做呢?应用新尺寸时,需要设置布局转换。请查看this developer.android.com/training/animation/layout.html
TransitionManager.beginDelayedTransition(transitionsContainer, new TransitionSet()
.addTransition(new ChangeBounds())
.addTransition(new ChangeImageTransform()));
ViewGroup.LayoutParams params = imageView.getLayoutParams();
params.height = expanded ? ViewGroup.LayoutParams.MATCH_PARENT :
ViewGroup.LayoutParams.WRAP_CONTENT;
imageView.setLayoutParams(params);
imageView.setScaleType(expanded ? ImageView.ScaleType.CENTER_CROP :
ImageView.ScaleType.FIT_CENTER);
示例代码的源代码
解决此问题:
public class MainActivity extends AppCompatActivity {
private CardView cardView;
private Boolean isCollapsed = true;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
cardView = (CardView) findViewById(R.id.card_view);
final int originalDimension = Math.round(getResources().getDimension(R.dimen.original_card_view_height));
final int newDimension = Math.round(getResources().getDimension(R.dimen.new_card_view_height));
cardView.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
if(isCollapsed){
TransitionManager.beginDelayedTransition(cardView, new TransitionSet()
.addTransition(new ChangeBounds()));
ViewGroup.LayoutParams params = cardView.getLayoutParams();
params.height = newDimension;
cardView.setLayoutParams(params);
isCollapsed = false;
} else {
TransitionManager.beginDelayedTransition(cardView, new TransitionSet()
.addTransition(new ChangeBounds()));
ViewGroup.LayoutParams params = cardView.getLayoutParams();
params.height = originalDimension;
cardView.setLayoutParams(params);
isCollapsed = true;
}
}
});
}
}
应用新尺寸时,您需要设置布局转换。请查看此页,谢谢您的回答,但此示例适用于图像。。。我需要一张卡片,这是样品。你可以为所有的视图和布局做它。嘿,我又试了一次,成功了!请在此要点中将您的答案修改为MainActivity.java,以便我可以接受您的正确答案:不为我工作:最终RelativeLayout.LayoutParams rlp=(RelativeLayout.LayoutParams)animatingImageview.getLayoutParams();rlp.leftMargin=newLeft;rlp.topMargin=newTop-空间;rlp.width=newWidth;rlp.height=新高度;设置ImageView.setLayoutParams(rlp)的动画;