使用
构建popupwindow
int width = LayoutParams.WRAP_CONTENT;
int height = LayoutParams.WRAP_CONTENT;
//获取要popupwindow对象—并设置参数
// 参1 要弹出的view 参2 宽 参3高
PopupWindow popupWindow = new PopupWindow(convertview, width, height);
// 点击popupwindow外的地方不消失,点击返回键应用退出,说明焦点在activity上.
// 设置背景--点击外面会消失,点击返回键也会消失(如果不设置,不消失)
popupWindow.setBackgroundDrawable(new ColorDrawable(Color.RED));
// 点击popupwindow外的地方不消失,点击返回键应用退出,说明焦点在activity上.
让其按返回键不退出也不消失
//让其有焦点--按返回键不退出了,但也不消失
// 是因为你没有设置popupwindow的背景
popupWindow.setFocusable(true);
三种show的方式
//第一种 参1 锚点 :view 即:显示到这个view的下方
popupWindow.showAsDropDown(tv);
//第二种 参1view 参2x轴的偏移量 参3Y轴的偏移量
// 默认显示在参一的下方
popupWindow.showAsDropDown(convertview, 100, 100);
//第三种 参1输入当前activity里的任意一个view--为了找到当前activity ,window的一个标识
// 参2 x轴的偏移量
// 参3 Y轴的偏移量
// 参4 重心位置显示的大概位置,可以加或|来再更加确定其位置
// 默认是上下居中的,且是全屏的
popupWindow.showAsDropDown(tv, 0, 0, Gravity.RIGHT | Gravity.TOP);
设置动画样式
popupWindow.setAnimationStyle(R.style.PopAnimation);
案例
protected void ShowPop(View view) {
//----------------构造pop--------------
//将布局转成view
View contentView = View.inflate(getApplicationContext(), R.layout.pop_view, null);
//宽高是WRAP_CONTENT
int width = LayoutParams.WRAP_CONTENT;
int height = LayoutParams.WRAP_CONTENT;
//获取popupwindow对象
// 参1 要现实的弹出框的view 参2 宽 参3高
PopupWindow popupWindow = new PopupWindow(contentView, width, height);
//----------------一般性设置--------------
//按返回键不退出了,但也不消失
popupWindow.setFocusable(true);// 让有焦点
//设置背景 如果不设置 点击其它区域不能消失 如果不需要 就设置为透明
popupWindow.setBackgroundDrawable(new ColorDrawable(Color.TRANSPARENT));
//----------------设置动画样式--------------
popupWindow.setAnimationStyle(R.style.PopAnimation);
//----------------显示--------------
// 锚点 显示在描点的下面
// popupWindow.showAsDropDown(view);
// 参2 x轴偏移量 参3 y轴偏移量
//要向右和向上挪动
popupWindow.showAsDropDown(view, 60, -60);
// 参1 输入当前activity里的任意一个view 参2重心位置 参3x轴偏移量参4y轴偏移量
// popupWindow.showAtLocation(tv, Gravity.RIGHT | Gravity.TOP, 0, 100);
}
进入和退出动画
enter
<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android"
android:shareInterpolator="false">
<translate
android:duration="1000"
android:fromXDelta="100%"
android:interpolator="@anim/overshoot"
android:toXDelta="0" />
<alpha
android:duration="1000"
android:fromAlpha="0.5"
android:interpolator="@anim/decelerate_cubic"
android:toAlpha="1.0" />
</set>
exit
<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android"
android:shareInterpolator="false">
<translate
android:duration="1000"
android:fromXDelta="0"
android:interpolator="@anim/anticipate"
android:toXDelta="100%" />
<alpha
android:duration="1000"
android:fromAlpha="1.0"
android:interpolator="@anim/accelerate_cubic"
android:toAlpha="0.0" />
</set>
插补器
到sdk下面拷贝
使用Androidstudio--将其放在res/anim目录下
eclipse放在res/interpolator目录下
android-sdk-windows\platforms\android-20\data\res\interpolator
Anticipate.xml和Overshoot.xml
anticipate.xml
<?xml version="1.0" encoding="utf-8"?>
<!--
/*
**
** Copyright 2009, The Android Open Source Project
**
** Licensed under the Apache License, Version 2.0 (the "License");
** you may not use this file except in compliance with the License.
** You may obtain a copy of the License at
**
** http://www.apache.org/licenses/LICENSE-2.0
**
** Unless required by applicable law or agreed to in writing, software
** distributed under the License is distributed on an "AS IS" BASIS,
** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
** See the License for the specific language governing permissions and
** limitations under the License.
*/
-->
<anticipateInterpolator />
accelerate_cubic.xml
<?xml version="1.0" encoding="utf-8"?><!--
/*
** Copyright 2010, The Android Open Source Project
**
** Licensed under the Apache License, Version 2.0 (the "License");
** you may not use this file except in compliance with the License.
** You may obtain a copy of the License at
**
** http://www.apache.org/licenses/LICENSE-2.0
**
** Unless required by applicable law or agreed to in writing, software
** distributed under the License is distributed on an "AS IS" BASIS,
** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
** See the License for the specific language governing permissions and
** limitations under the License.
*/
-->
<accelerateInterpolator xmlns:android="http://schemas.android.com/apk/res/android"
android:factor="1.5" />
添加动画样式--然后在代码中添加
<style name="PopAnimation">
<item name="android:windowEnterAnimation">@anim/pop_enter</item>
<item name="android:windowExitAnimation">@anim/pop_exit</item>
</style>
修改弹出pop的背景
//弹出pop前后修改背景色
private void setBackgroundAlpha(float from, float to, int duration) {
final WindowManager.LayoutParams lp = mActivity.getWindow().getAttributes();
ValueAnimator animator = ValueAnimator.ofFloat(from, to);
animator.setDuration(duration);
animator.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() {
@Override
public void onAnimationUpdate(ValueAnimator animation) {
lp.alpha = (float) animation.getAnimatedValue();
mActivity.getWindow().setAttributes(lp);
}
});
animator.start();
}
//或者
public void backgroundAlpaha(Activity context, float bgAlpha) {
WindowManager.LayoutParams lp = context.getWindow().getAttributes();
lp.alpha = bgAlpha;
context.getWindow()
.addFlags(WindowManager.LayoutParams.FLAG_DIM_BEHIND);
context.getWindow().setAttributes(lp);
}
消失后将背景透明度还原
mPopupWindow.setOnDismissListener(new PopupWindow.OnDismissListener() {
@Override
public void onDismiss() {
setBackgroundAlpha(alpha, 1f, 300);
}
});
修改pop的宽高
和View（锚点）一样宽
int width = view.getWidth();
int height = LinearLayout.LayoutParams.WRAP_CONTENT;
mPopupWindow = new PopupWindow(mTopPop, width, height);
全屏宽
int width = LinearLayout.LayoutParams.MATCH_PARENT;
int height = LinearLayout.LayoutParams.WRAP_CONTENT;
mPopupWindow = new PopupWindow(mTopPop, width, height);
