本文为大家分享了Android自定义Toast之WindowManager，供大家参考，具体内容如下
Toast:WindowManager
三个重要的API:
- public void addView(View view, ViewGroup.LayoutParams params);
- public void updateViewLayout(View view, ViewGroup.LayoutParams params);
相当于布局文件中的属性
- public void removeView(View view);
一定要销毁，否则无法退出程序。一定要移除，否则报异常
Toast：WindowManager
- Toast：setView
- 自定义Toast:WindowManager 步骤
1) 获取WindowManager对象
2）产生WindowManager.LayoutParams(并且设置参数)
3）产生一个View
4）显示：addView(view,mParams);
5) 隐藏：removeView(view);
6) 更新位置一：view:设置一个OnTouchListener：ACTION_DONW,ACTION_MOVE,ACTION_UP
7) 更新位置二：updateViewLayout(view,mParams)
8）写成AddressToast
布局文件
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<TextView android:id="@+id/tv_custom_toast" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="人间仙境" android:drawableLeft="@drawable/address" android:gravity="center_vertical" android:drawablePadding="5dp" android:padding="10dp" /> |
封装的工具类
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public class AddressToast { private WindowManager mWm; private WindowManager.LayoutParams mParams; private Context mContext; private View mV; public AddressToast(Context context){ this.mContext = context; // 1 获取WindowManger 对象 mWm = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE); // 2 产生LayoutParams mParams = new WindowManager.LayoutParams(); // 3 设置相关参数 mParams.width=WindowManager.LayoutParams.WRAP_CONTENT; mParams.height=WindowManager.LayoutParams.WRAP_CONTENT; mParams.type = WindowManager.LayoutParams.TYPE_PRIORITY_PHONE; // params.flags = WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON // | WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE // | WindowManager.LayoutParams.FLAG_NOT_TOUCHABLE; mParams.flags = WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON | WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE; } //显示文本 public void show(String msg){ // 4 产生一个View mV = View.inflate(mContext, R.layout.view_toast, null); // 5 WindowManager:addView(view,params); mWm.addView(mV, mParams); } public void hide() { if (mV != null) { if (mV.getParent() != null) { mWm.removeView(mV); } mV = null; } }} |
调用工具类的逻辑:
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public void clickMe2(View v) { mToast = new AddressToast(this); mToast.show("好迪真好大家好才是...."); } public void clickMe3(View v) { mToast.hide(); } //onPause()一定要执行，否则报错 @Override protected void onPause() { super.onPause(); //remove if(mV!=null){ if(mV.getParent()!=null){ mWm.removeView(mV); } mV=null; } } |
对产生的view设置接触监听事件
刚刚的弹出的window还不能移动，可设置接触添加mv.setOnTouchListener(this)并实现接口OnTouchListener中的onTouch方法：
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@Override public boolean onTouch(View v, MotionEvent event) { // getX是获取以widget左上角为坐标原点计算的Ｘ轴坐标值 // getRawX 获取的是以屏幕左上角为坐标原点计算的Ｘ轴坐标值 int action = event.getAction(); switch (action) { case MotionEvent.ACTION_DOWN: // Log.d("example", "ACTION_DOWN"); mDownX = event.getRawX(); mDownY = event.getRawY(); break; case MotionEvent.ACTION_MOVE: // Log.d("example", "ACTION_MOVE"); float moveX = event.getRawX(); float moveY = event.getRawY(); // x int dx = (int) (moveX - mDownX + 0.5f); // 0.5f 四舍五入 (int)4.1 4 int dy = (int) (moveY - mDownY + 0.5f); Log.d("example", "dx=" + dx); mParams.x += dx; mParams.y += dy; //7.更新位置二 mWm.updateViewLayout(mV, mParams); // 重新给按下去点赋值 mDownX = moveX; mDownY = moveY; break; case MotionEvent.ACTION_UP: // Log.d("example", "ACTION_UP"); break; default: break; } return false; }} |
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服务器之家。
原文链接：https://blog.csdn.net/c123sdn123/article/details/52235254
