Android 全局悬浮View实现，以及悬浮view点击事件

package com.dlc.floatbuttonsinapp; import android.os.Bundle; import android.view.Gravity; import android.view.View; import android.view.Window; import android.view.WindowManager; import android.widget.Button; import android.widget.FrameLayout; import android.widget.RelativeLayout; import android.widget.Toast; import androidx.annotation.Nullable; import androidx.appcompat.app.AppCompatActivity; /** * @Author: We * @Date: 2020/06/29 * @Desc: */ public abstract class CommonActivity extends AppCompatActivity { Button button1; boolean topifshow=true; @Override protected void onCreate(@Nullable Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(getLayoutId()); createFloatActionButtons(); button1 = findViewById(R.id.btn_action_add); button1.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { final SetPayPwdDialog setPayPwdDialog = new SetPayPwdDialog(CommonActivity.this,"删除车辆", "车牌号："+",核载："+"KG,\n司机：" +",\n手机号:"); setPayPwdDialog.findViewById(R.id.btnSet).setOnClickListener(new View.OnClickListener() { @Override public void onClick(View view) { Toast.makeText(CommonActivity.this,"sss",Toast.LENGTH_SHORT).show(); setPayPwdDialog.dismiss(); } }); setPayPwdDialog.show(); } }); initbt(); } private void createFloatActionButtons() { View v = getWindow().getLayoutInflater().inflate(R.layout.layout_float_action_buttons, null); FrameLayout.LayoutParams layoutParams = new FrameLayout.LayoutParams(FrameLayout.LayoutParams.WRAP_CONTENT, FrameLayout.LayoutParams.WRAP_CONTENT); layoutParams.gravity = Gravity.BOTTOM | Gravity.RIGHT; addContentView(v, layoutParams); } public abstract int getLayoutId(); public void ifshowb1(boolean ifshow){ topifshow = ifshow; if (ifshow){ button1.setVisibility(View.VISIBLE); }else { button1.setVisibility(View.GONE); } } public void initbt(){ if (topifshow){ button1.setVisibility(View.VISIBLE); }else { button1.setVisibility(View.GONE); } } }