PopWindow带动画向下弹出效果 Android自定义PopWindow带动画向下弹出效果
狱火苍穹 人气:0首先建一个popwin的实体类
package dmpte.mytest; import android.content.Context; import android.view.LayoutInflater; import android.view.MotionEvent; import android.view.View; import android.widget.PopupWindow; import android.widget.RelativeLayout; public class PopWin extends PopupWindow { private Context mContext; private View view; public PopWin(final Context mContext, View.OnClickListener itemsOnClick, int flag) { this.mContext = mContext; this.view = LayoutInflater.from(mContext).inflate(R.layout.view_popwin, null); // 设置外部可点击 this.setOutsideTouchable(true); /* 设置弹出窗口特征 */ // 设置视图 this.setContentView(this.view); // 设置弹出窗体的宽和高 this.setHeight(RelativeLayout.LayoutParams.WRAP_CONTENT);//高 this.setWidth(RelativeLayout.LayoutParams.MATCH_PARENT);//宽 // 设置弹出窗体可点击 this.setFocusable(true); // 设置弹出窗体显示时的动画,从底部向上弹出 this.setAnimationStyle(R.style.take_photo_anim); // mMenuView添加OnTouchListener监听判断获取触屏位置如果在选择框外面则销毁弹出框 this.view.setOnTouchListener(new View.OnTouchListener() { @Override public boolean onTouch(View v, MotionEvent event) { int height = view.findViewById(R.id.pop_layout).getHeight(); int y = (int) event.getY(); if (event.getAction() == MotionEvent.ACTION_DOWN) { //Y表示手指点击的位置,屏幕顶端为0,往下一次递增。height是popwin的高度。y > height就表示手指点在popwin的外面,然后关闭popwin if (y > height) { dismiss(); } } return true; } }); } }
然后是这个类的布局 view_popwin.xml
<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:id="@+id/pop_layout" android:layout_width="match_parent" android:layout_height="match_parent" android:background="@null" android:orientation="vertical"> <LinearLayout android:layout_width="match_parent" android:layout_height="170dp" android:background="#ffff" android:orientation="vertical"> <TextView android:id="@+id/tv_jingtai" android:layout_width="match_parent" android:layout_height="match_parent" android:layout_gravity="center" android:layout_marginTop="2dp" android:gravity="center" android:text="移动静态" android:textColor="#f123" /> </LinearLayout> </LinearLayout>
接下来是这个类里涉及的动画 popwin_anim,在res/values/styles下
<style name="popwin_anim" parent="android:Animation"> <item name="android:windowEnterAnimation">@anim/pop_enter_anim</item> <item name="android:windowExitAnimation">@anim/pop_exit_anim</item> </style>
然后是进场动画 pop_enter_anim和出场动画 pop_exit_anim,在res下建一个文件夹anim,分别新建上面两个xml
pop_enter_anim.xml
<?xml version="1.0" encoding="utf-8"?> <set xmlns:android="http://schemas.android.com/apk/res/android" android:shareInterpolator="false"> <!-- 平移动画 --> <translate android:duration="500" android:fromYDelta="-100%p" android:toYDelta="0" /> </set>
pop_exit_anim.xml
<?xml version="1.0" encoding="utf-8"?> <set xmlns:android="http://schemas.android.com/apk/res/android" android:shareInterpolator="false"> <!-- 平移动画 --> <translate android:duration="1000" android:fromYDelta="0" android:toYDelta="-100%p" /> </set>
最后是使用
//让背景变暗 WindowManager.LayoutParams lp = getWindow().getAttributes(); lp.alpha = 0.7f; getWindow().setAttributes(lp); //弹出窗体 PopWin popWin_ = new PopWin(this, null, 0); popWin_.showAsDropDown(findViewById(R.id.relativeLayout)); //监听popwin是否关闭,关闭的话让背景恢复 popWin_.setOnDismissListener(new PopupWindow.OnDismissListener() { @Override public void onDismiss() { WindowManager.LayoutParams lp = getWindow().getAttributes(); lp.alpha = 1f; getWindow().setAttributes(lp); } });
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