Java Android项目在listview上滑动
几天以来,我一直在安卓Java Android项目在listview上滑动,java,android,xml,android-listview,adapter,Java,Android,Xml,Android Listview,Adapter,几天以来,我一直在安卓Listview上为这个话题苦苦挣扎,但我似乎没有理解正确。我就是不明白怎么做。关于适配器(特别是BaseAdapter),我已经学到了我所能学到的最好的东西,但仍然无法用一种方式来思考 我在网上搜索过信息,但没有完全弄明白 我想做的是:我想创建一个 联系人 每行有3个水平部分:一张恒定的照片、内容x和内容y(最后一个在屏幕外,不可见) 我希望当用户刷一个物品时 从右到左,内容(带有信息x)淡出。这个 其他内容(信息Y)从屏幕外滑入, 同时具有从右向左的方向 当用户 向后
Listview
上为这个话题苦苦挣扎,但我似乎没有理解正确。我就是不明白怎么做。关于适配器
(特别是BaseAdapter
),我已经学到了我所能学到的最好的东西,但仍然无法用一种方式来思考
我在网上搜索过信息,但没有完全弄明白
- 我想做的是:我想创建一个 联系人李>
- 每行有3个水平部分:一张恒定的照片、内容x和内容y(最后一个在屏幕外,不可见)
- 我希望当用户刷一个物品时 从右到左,内容(带有信息x)淡出。这个 其他内容(信息Y)从屏幕外滑入, 同时具有从右向左的方向
- 当用户 向后滑动(从左到右)内容y再次向外滑动 初始内容x淡入
<set xmlns:android="http://schemas.android.com/apk/res/android"
android:shareInterpolator="false">
<translate android:fromXDelta="-100%" android:toXDelta="0%"
android:fromYDelta="0%" android:toYDelta="0%"
android:duration="700"/>
</set>
<set xmlns:android="http://schemas.android.com/apk/res/android"
android:shareInterpolator="false">
<translate
android:fromXDelta="0%" android:toXDelta="100%"
android:fromYDelta="0%" android:toYDelta="0%"
android:duration="700" />
</set>
在您的编码中,使用从右到左的意图
this.overridePendingTransition(R.anim.animation_leave,
R.anim.animation_enter);
对于自定义列表视图,您可以使用以下代码:
只需捕捉手势事件并应用动画,然后制作一个布局,该布局将在手势事件上消失
如果您是出于正常目的而使用,那么下面就是您想要的工作示例: 在res/anim/(用于动画目的)中使用此xml 这适用于从左到右的动画:
<set xmlns:android="http://schemas.android.com/apk/res/android"
android:shareInterpolator="false">
<translate android:fromXDelta="-100%" android:toXDelta="0%"
android:fromYDelta="0%" android:toYDelta="0%"
android:duration="700"/>
</set>
<set xmlns:android="http://schemas.android.com/apk/res/android"
android:shareInterpolator="false">
<translate
android:fromXDelta="0%" android:toXDelta="100%"
android:fromYDelta="0%" android:toYDelta="0%"
android:duration="700" />
</set>
在您的编码中,使用从右到左的意图
this.overridePendingTransition(R.anim.animation_leave,
R.anim.animation_enter);
对于自定义列表视图,您可以使用以下代码:
只需捕捉手势事件并应用动画,然后制作一个布局,该布局将在手势事件上消失
如果您是出于正常目的而使用,那么下面就是您想要的工作示例:
向ListView添加这样的动画没有问题,我在几分钟内为一个普通的非自定义ListView构建了这个解决方案,通常这种方法适用于任何一个现成的ListView,所有这些都在适配器中。我的答案中唯一缺少的是刷卡检测,不幸的是我现在没有时间来测试。但是刷卡检测并不困难,如果你在谷歌上搜索的话,有很多例子。不管怎样,如果你有问题,请随时提问 结果:
我使用的是一个带有ViewHolder模式的简单BaseAdapter,没有什么特别的,我将发布getView方法以澄清:
@Override
public View getView(int position, View convertView, ViewGroup parent) {
if(getItemId(position) == TEST_VIEW_ID) {
TestViewModel viewModel = (TestViewModel) getItem(position);
TestRow row;
if(convertView == null) {
convertView = this.inflater.inflate(TestRow.LAYOUT, parent, false);
row = new TestRow(convertView); // Here the magic happens
convertView.setTag(row);
}
row = (TestRow) convertView.getTag();
row.bind(viewModel);
}
return convertView;
}
在我的ViewHolder类中,这里称为TestRow
我为动画创建了一些助手方法,下面我将进一步解释它们,但这里首先是我的代码来自TestRow
:
public class TestRow {
public static final int LAYOUT = R.layout.list_item_test;
public ImageView ivLogo;
public TextView tvFadeOut;
public TextView tvSlideIn;
public TestRow(View view) {
this.ivLogo = (ImageView) view.findViewById(R.id.ivLogo);
this.tvFadeOut = (TextView) view.findViewById(R.id.tvFadeOut);
this.tvSlideIn = (TextView) view.findViewById(R.id.tvSlideIn);
this.ivLogo.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
// When the ImageView is clicked the animations are applied to the TextViews.
if(tvFadeOut.getVisibility() == View.VISIBLE) {
fadeOutView(tvFadeOut);
slideInView(tvSlideIn);
} else {
fadeInView(tvFadeOut);
slideOutView(tvSlideIn);
}
}
});
}
public void bind(TestViewModel viewModel) {
// Nothing to do here
}
}
以下是我用于动画的辅助方法:
private void fadeOutView(View view) {
Animation fadeOut = AnimationUtils.loadAnimation(view.getContext(), R.anim.fade_out);
if (fadeOut != null) {
fadeOut.setAnimationListener(new ViewAnimationListener(view) {
@Override
protected void onAnimationStart(View view, Animation animation) {
}
@Override
protected void onAnimationEnd(View view, Animation animation) {
view.setVisibility(View.GONE);
}
});
view.startAnimation(fadeOut);
}
}
private void fadeInView(View view) {
Animation fadeIn = AnimationUtils.loadAnimation(view.getContext(), R.anim.fade_in);
if (fadeIn != null) {
fadeIn.setAnimationListener(new ViewAnimationListener(view) {
@Override
protected void onAnimationStart(View view, Animation animation) {
view.setVisibility(View.VISIBLE);
}
@Override
protected void onAnimationEnd(View view, Animation animation) {
}
});
view.startAnimation(fadeIn);
}
}
private void slideInView(View view) {
Animation slideIn = AnimationUtils.loadAnimation(view.getContext(), R.anim.slide_in_right);
if (slideIn != null) {
slideIn.setAnimationListener(new ViewAnimationListener(view) {
@Override
protected void onAnimationStart(View view, Animation animation) {
view.setVisibility(View.VISIBLE);
}
@Override
protected void onAnimationEnd(View view, Animation animation) {
}
});
view.startAnimation(slideIn);
}
}
private void slideOutView(View view) {
Animation slideOut = AnimationUtils.loadAnimation(view.getContext(), R.anim.slide_out_right);
if (slideOut != null) {
slideOut.setAnimationListener(new ViewAnimationListener(view) {
@Override
protected void onAnimationStart(View view, Animation animation) {
}
@Override
protected void onAnimationEnd(View view, Animation animation) {
view.setVisibility(View.GONE);
}
});
view.startAnimation(slideOut);
}
}
private abstract class ViewAnimationListener implements Animation.AnimationListener {
private final View view;
protected ViewAnimationListener(View view) {
this.view = view;
}
@Override
public void onAnimationStart(Animation animation) {
onAnimationStart(this.view, animation);
}
@Override
public void onAnimationEnd(Animation animation) {
onAnimationEnd(this.view, animation);
}
@Override
public void onAnimationRepeat(Animation animation) {
}
protected abstract void onAnimationStart(View view, Animation animation);
protected abstract void onAnimationEnd(View view, Animation animation);
}
以下是我使用的动画xml:
淡入:
<set xmlns:android="http://schemas.android.com/apk/res/android"
android:shareInterpolator="false">
<alpha
android:fromAlpha="0"
android:toAlpha="1"
android:duration="700"/>
</set>
淡出:
<set xmlns:android="http://schemas.android.com/apk/res/android"
android:shareInterpolator="false">
<alpha
android:fromAlpha="1"
android:toAlpha="0"
android:duration="700"/>
</set>
滑入:
<set xmlns:android="http://schemas.android.com/apk/res/android"
android:shareInterpolator="false">
<translate
android:fromXDelta="100%" android:toXDelta="0%"
android:duration="700"/>
</set>
滑出:
<set xmlns:android="http://schemas.android.com/apk/res/android"
android:shareInterpolator="false">
<translate
android:fromXDelta="0%" android:toXDelta="100%"
android:duration="700"/>
</set>
向ListView添加这样的动画没有问题,我在几分钟内为一个普通的非自定义ListView构建了这个解决方案,通常这种方法适用于任何一个现成的ListView,所有这些都在适配器中。我的答案中唯一缺少的是刷卡检测,不幸的是我现在没有时间来测试。但是刷卡检测并不困难,如果你在谷歌上搜索的话,有很多例子。不管怎样,如果你有问题,请随时提问 结果:
我使用的是一个带有ViewHolder模式的简单BaseAdapter,没有什么特别的,我将发布getView方法以澄清:
@Override
public View getView(int position, View convertView, ViewGroup parent) {
if(getItemId(position) == TEST_VIEW_ID) {
TestViewModel viewModel = (TestViewModel) getItem(position);
TestRow row;
if(convertView == null) {
convertView = this.inflater.inflate(TestRow.LAYOUT, parent, false);
row = new TestRow(convertView); // Here the magic happens
convertView.setTag(row);
}
row = (TestRow) convertView.getTag();
row.bind(viewModel);
}
return convertView;
}
在我的ViewHolder类中,这里称为TestRow
我为动画创建了一些助手方法,下面我将进一步解释它们,但这里首先是我的代码来自TestRow
:
public class TestRow {
public static final int LAYOUT = R.layout.list_item_test;
public ImageView ivLogo;
public TextView tvFadeOut;
public TextView tvSlideIn;
public TestRow(View view) {
this.ivLogo = (ImageView) view.findViewById(R.id.ivLogo);
this.tvFadeOut = (TextView) view.findViewById(R.id.tvFadeOut);
this.tvSlideIn = (TextView) view.findViewById(R.id.tvSlideIn);
this.ivLogo.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
// When the ImageView is clicked the animations are applied to the TextViews.
if(tvFadeOut.getVisibility() == View.VISIBLE) {
fadeOutView(tvFadeOut);
slideInView(tvSlideIn);
} else {
fadeInView(tvFadeOut);
slideOutView(tvSlideIn);
}
}
});
}
public void bind(TestViewModel viewModel) {
// Nothing to do here
}
}
以下是我用于动画的辅助方法:
private void fadeOutView(View view) {
Animation fadeOut = AnimationUtils.loadAnimation(view.getContext(), R.anim.fade_out);
if (fadeOut != null) {
fadeOut.setAnimationListener(new ViewAnimationListener(view) {
@Override
protected void onAnimationStart(View view, Animation animation) {
}
@Override
protected void onAnimationEnd(View view, Animation animation) {
view.setVisibility(View.GONE);
}
});
view.startAnimation(fadeOut);
}
}
private void fadeInView(View view) {
Animation fadeIn = AnimationUtils.loadAnimation(view.getContext(), R.anim.fade_in);
if (fadeIn != null) {
fadeIn.setAnimationListener(new ViewAnimationListener(view) {
@Override
protected void onAnimationStart(View view, Animation animation) {
view.setVisibility(View.VISIBLE);
}
@Override
protected void onAnimationEnd(View view, Animation animation) {
}
});
view.startAnimation(fadeIn);
}
}
private void slideInView(View view) {
Animation slideIn = AnimationUtils.loadAnimation(view.getContext(), R.anim.slide_in_right);
if (slideIn != null) {
slideIn.setAnimationListener(new ViewAnimationListener(view) {
@Override
protected void onAnimationStart(View view, Animation animation) {
view.setVisibility(View.VISIBLE);
}
@Override
protected void onAnimationEnd(View view, Animation animation) {
}
});
view.startAnimation(slideIn);
}
}
private void slideOutView(View view) {
Animation slideOut = AnimationUtils.loadAnimation(view.getContext(), R.anim.slide_out_right);
if (slideOut != null) {
slideOut.setAnimationListener(new ViewAnimationListener(view) {
@Override
protected void onAnimationStart(View view, Animation animation) {
}
@Override
protected void onAnimationEnd(View view, Animation animation) {
view.setVisibility(View.GONE);
}
});
view.startAnimation(slideOut);
}
}
private abstract class ViewAnimationListener implements Animation.AnimationListener {
private final View view;
protected ViewAnimationListener(View view) {
this.view = view;
}
@Override
public void onAnimationStart(Animation animation) {
onAnimationStart(this.view, animation);
}
@Override
public void onAnimationEnd(Animation animation) {
onAnimationEnd(this.view, animation);
}
@Override
public void onAnimationRepeat(Animation animation) {
}
protected abstract void onAnimationStart(View view, Animation animation);
protected abstract void onAnimationEnd(View view, Animation animation);
}
以下是我使用的动画xml:
淡入:
<set xmlns:android="http://schemas.android.com/apk/res/android"
android:shareInterpolator="false">
<alpha
android:fromAlpha="0"
android:toAlpha="1"
android:duration="700"/>
</set>
淡出:
<set xmlns:android="http://schemas.android.com/apk/res/android"
android:shareInterpolator="false">
<alpha
android:fromAlpha="1"
android:toAlpha="0"
android:duration="700"/>
</set>
滑入:
<set xmlns:android="http://schemas.android.com/apk/res/android"
android:shareInterpolator="false">
<translate
android:fromXDelta="100%" android:toXDelta="0%"
android:duration="700"/>
</set>
滑出:
<set xmlns:android="http://schemas.android.com/apk/res/android"
android:shareInterpolator="false">
<translate
android:fromXDelta="0%" android:toXDelta="100%"
android:duration="700"/>
</set>
第二个链接不再可用第二个链接不再可用