前言
在H5火热的时代,许多框架都出了底部弹窗的控件,在H5被称为弹出菜单ActionSheet,今天我们也来模仿一个ios的底部弹窗,取材于苹果QQ的选择头像功能。
正文
废话不多说,先来个今天要实现的效果图
整个PopupWindow的开启代码
private void openPopupWindow(View v) { //防止重复按按钮 if (popupWindow != null && popupWindow.isShowing()) { return; } //设置PopupWindow的View View view = LayoutInflater.from(this).inflate(R.layout.view_popupwindow, null); popupWindow = new PopupWindow(view, RelativeLayout.LayoutParams.MATCH_PARENT, RelativeLayout.LayoutParams.WRAP_CONTENT); //设置背景,这个没什么效果,不添加会报错 popupWindow.setBackgroundDrawable(new BitmapDrawable()); //设置点击弹窗外隐藏自身 popupWindow.setFocusable(true); popupWindow.setOutsideTouchable(true); //设置动画 popupWindow.setAnimationStyle(R.style.PopupWindow); //设置位置 popupWindow.showAtLocation(v, Gravity.BOTTOM, 0, navigationHeight); //设置消失监听 popupWindow.setOnDismissListener(this); //设置PopupWindow的View点击事件 setOnPopupViewClick(view); //设置背景色 setBackgroundAlpha(0.5f); }
步骤分析:
PopupWindow的布局
PopupWindow的创建
PopupWindow添加动画效果
PopupWindow设置背景阴影
PopupWindow监听点击事件
获取NavigationBar的高度
PopupWindow的布局:在Layout中,设计我们需要的布局
<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="wrap_content" android:orientation="vertical"> <LinearLayout android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_margin="8dp" android:background="@drawable/popup_shape" android:orientation="vertical"> <TextView android:layout_width="match_parent" android:layout_height="wrap_content" android:gravity="center" android:padding="16dp" android:text="你可以将照片上传至照片墙" android:textColor="#666" android:textSize="14sp" /> <View android:layout_width="match_parent" android:layout_height="0.1px" android:background="#888" /> <TextView android:id="@+id/tv_pick_phone" android:layout_width="match_parent" android:layout_height="wrap_content" android:gravity="center" android:padding="16dp" android:text="从手机相册选择" android:textColor="#118" android:textSize="18sp" /> <View android:layout_width="match_parent" android:layout_height="0.1px" android:background="#888" /> <TextView android:id="@+id/tv_pick_zone" android:layout_width="match_parent" android:layout_height="wrap_content" android:gravity="center" android:padding="16dp" android:text="从空间相册选择" android:textColor="#118" android:textSize="18sp" /> </LinearLayout> <LinearLayout android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_margin="8dp" android:background="@drawable/popup_shape"> <TextView android:id="@+id/tv_cancel" android:layout_width="match_parent" android:layout_height="wrap_content" android:gravity="center" android:padding="16dp" android:text="取消" android:textColor="#118" android:textSize="18sp" android:textStyle="bold" /> </LinearLayout> </LinearLayout>
其效果是:
PopupWindow的创建:这个创建与我们普通的控件创建方法是一样的
//设置PopupWindow的View View view = LayoutInflater.from(this).inflate(R.layout.view_popupwindow, null); popupWindow = new PopupWindow(view, RelativeLayout.LayoutParams.MATCH_PARENT, RelativeLayout.LayoutParams.WRAP_CONTENT);
PopupWindow添加动画效果:我们创建一个anim文件夹,创建我们的out和in动画效果,然后在style添加我们的动画
<?xml version="1.0" encoding="utf-8"?> <!--进入动画--> <translate xmlns:android="http://schemas.android.com/apk/res/android" android:interpolator="@android:anim/accelerate_interpolator" android:fromYDelta="100%" android:toYDelta="0" android:duration="200"/> <?xml version="1.0" encoding="utf-8"?> <!--退出动画--> <translate xmlns:android="http://schemas.android.com/apk/res/android" android:interpolator="@android:anim/accelerate_interpolator" android:fromYDelta="0" android:toYDelta="100%" android:duration="200"/> <!--弹窗动画--> <style name="PopupWindow"> <item name="android:windowEnterAnimation">@anim/window_in</item> <item name="android:windowExitAnimation">@anim/window_out</item> </style>
//设置动画
popupWindow.setAnimationStyle(R.style.PopupWindow);
PopupWindow设置背景阴影:弹窗打开时设置透明度为0.5,弹窗消失时设置透明度为1
//设置屏幕背景透明效果 public void setBackgroundAlpha(float alpha) { WindowManager.LayoutParams lp = getWindow().getAttributes(); lp.alpha = alpha; getWindow().setAttributes(lp); }
PopupWindow监听点击事件:监听我们PopupWindow里面控件的点击事件
//设置PopupWindow的View点击事件 setOnPopupViewClick(view); private void setOnPopupViewClick(View view) { TextView tv_pick_phone, tv_pick_zone, tv_cancel; tv_pick_phone = (TextView) view.findViewById(R.id.tv_pick_phone); tv_pick_zone = (TextView) view.findViewById(R.id.tv_pick_zone); tv_cancel = (TextView) view.findViewById(R.id.tv_cancel); tv_pick_phone.setOnClickListener(this); tv_pick_zone.setOnClickListener(this); tv_cancel.setOnClickListener(this); }
获取NavigationBar的高度:这里需要适配有些手机没有NavigationBar有些手机有,这里以存在NavigationBar来演示
int resourceId = getResources().getIdentifier("navigation_bar_height", "dimen", "android");
navigationHeight = getResources().getDimensionPixelSize(resourceId);
对存在NavigationBar的手机上,设置其PopupWindow的出现位置
//设置位置
popupWindow.showAtLocation(v, Gravity.BOTTOM, 0, navigationHeight);
对没有NavigationBar的手机上,设置其PopupWindow的出现位置
//设置位置
popupWindow.showAtLocation(v, Gravity.BOTTOM, 0, 0);
源码
Github:https://github.com/AndroidHensen/IOSPopupWindow
public class MainActivity extends AppCompatActivity implements View.OnClickListener, PopupWindow.OnDismissListener { private Button bt_open; private PopupWindow popupWindow; private int navigationHeight; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); bt_open = (Button) findViewById(R.id.bt_open); bt_open.setOnClickListener(this); int resourceId = getResources().getIdentifier("navigation_bar_height", "dimen", "android"); navigationHeight = getResources().getDimensionPixelSize(resourceId); } @Override public void onClick(View v) { switch (v.getId()) { case R.id.bt_open: openPopupWindow(v); break; case R.id.tv_pick_phone: Toast.makeText(this, "从手机相册选择", Toast.LENGTH_SHORT).show(); popupWindow.dismiss(); break; case R.id.tv_pick_zone: Toast.makeText(this, "从空间相册选择", Toast.LENGTH_SHORT).show(); popupWindow.dismiss(); break; case R.id.tv_cancel: popupWindow.dismiss(); break; } } private void openPopupWindow(View v) { //防止重复按按钮 if (popupWindow != null && popupWindow.isShowing()) { return; } //设置PopupWindow的View View view = LayoutInflater.from(this).inflate(R.layout.view_popupwindow, null); popupWindow = new PopupWindow(view, RelativeLayout.LayoutParams.MATCH_PARENT, RelativeLayout.LayoutParams.WRAP_CONTENT); //设置背景,这个没什么效果,不添加会报错 popupWindow.setBackgroundDrawable(new BitmapDrawable()); //设置点击弹窗外隐藏自身 popupWindow.setFocusable(true); popupWindow.setOutsideTouchable(true); //设置动画 popupWindow.setAnimationStyle(R.style.PopupWindow); //设置位置 popupWindow.showAtLocation(v, Gravity.BOTTOM, 0, navigationHeight); //设置消失监听 popupWindow.setOnDismissListener(this); //设置PopupWindow的View点击事件 setOnPopupViewClick(view); //设置背景色 setBackgroundAlpha(0.5f); } private void setOnPopupViewClick(View view) { TextView tv_pick_phone, tv_pick_zone, tv_cancel; tv_pick_phone = (TextView) view.findViewById(R.id.tv_pick_phone); tv_pick_zone = (TextView) view.findViewById(R.id.tv_pick_zone); tv_cancel = (TextView) view.findViewById(R.id.tv_cancel); tv_pick_phone.setOnClickListener(this); tv_pick_zone.setOnClickListener(this); tv_cancel.setOnClickListener(this); } //设置屏幕背景透明效果 public void setBackgroundAlpha(float alpha) { WindowManager.LayoutParams lp = getWindow().getAttributes(); lp.alpha = alpha; getWindow().setAttributes(lp); } @Override public void onDismiss() { setBackgroundAlpha(1); } }
以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持脚本之家。