Android实现底部支付弹窗效果

public class BottomDialogView extends PopupWindow { 
 private View dialogView; 
 private EditText payPassEt; 
 private Button cancelBtn, confirmBtn; 
 private ImageView backDialogIv; 
 
 public BottomDialogView(Activity context, final BottomDialogOnclickListener bottomDialogOnclickListener) { 
 super(context); 
 LayoutInflater inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE); 
 dialogView = inflater.inflate(R.layout.dialog, null); 
 backDialogIv = (ImageView) dialogView.findViewById(R.id.backDialogIv); 
 payPassEt = (EditText) dialogView.findViewById(R.id.payPassEt); 
 cancelBtn = (Button) dialogView.findViewById(R.id.cancelBtn); 
 confirmBtn = (Button) dialogView.findViewById(R.id.confirmBtn); 
 backDialogIv.setOnClickListener(new OnClickListener() { 
  @Override 
  public void onClick(View view) { 
  dismiss(); 
  } 
 }); 
 cancelBtn.setOnClickListener(new OnClickListener() { 
  @Override 
  public void onClick(View view) { 
  dismiss(); 
  } 
 }); 
 confirmBtn.setOnClickListener(new OnClickListener() { 
  @Override 
  public void onClick(View view) { 
  bottomDialogOnclickListener.onPositiveClick(payPassEt.getText().toString().trim(), BottomDialogView.this); 
  } 
 }); 
 
 
 this.setContentView(dialogView); 
 this.setWidth(LayoutParams.MATCH_PARENT); 
 this.setHeight(LayoutParams.MATCH_PARENT); 
 this.setFocusable(true); 
 this.setAnimationStyle(R.style.DialogShowStyle); //设置弹出窗体动画效果 
 ColorDrawable dw = new ColorDrawable(0xb0000000); 
 this.setBackgroundDrawable(dw); 
 
 dialogView.setOnTouchListener(new OnTouchListener() { 
  public boolean onTouch(View v, MotionEvent event) { 
  int height = dialogView.findViewById(R.id.pop_layout).getTop(); 
  int y = (int) event.getY(); 
  if (event.getAction() == MotionEvent.ACTION_UP) { 
   if (y < height) { //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 
//   dismiss(); 
   } 
  } 
  return true; 
  } 
 }); 
 
 } 
 
} 

public class ShowBottomDialogAct extends AppCompatActivity { 
 private Button showBtn; 
 
 @Override 
 protected void onCreate(Bundle savedInstanceState) { 
 super.onCreate(savedInstanceState); 
 setContentView(R.layout.activity_show_bottom_dialog); 
 showBtn = (Button) findViewById(R.id.showBtn); 
 showBtn.setOnClickListener(new View.OnClickListener() { 
  @Override 
  public void onClick(View view) { 
  showDialog(); 
  } 
 }); 
 } 
 
 
 private void showDialog() { 
 DialogUtil.showBottomDialog(ShowBottomDialogAct.this, R.id.activity_show_bottom_dialog, new BottomDialogOnclickListener() { 
  @Override 
  public void onPositiveClick(String contentStr, BottomDialogView dialogView) { 
  dialogView.dismiss(); 
  } 
 }); 
 } 
 
} 

public static void showBottomDialog(Activity activity , int dialogLayoutId , BottomDialogOnclickListener bottomDialogOnclickListener){ 
 
 BottomDialogView bottomDialogView = new BottomDialogView(activity, bottomDialogOnclickListener); 
 bottomDialogView.showAtLocation(activity.findViewById(dialogLayoutId), Gravity.BOTTOM | Gravity.CENTER_HORIZONTAL, 0, 0); //设置窗口显示在parent布局的位置并显示 
 InputMethodManager imm = (InputMethodManager) activity.getSystemService(Context.INPUT_METHOD_SERVICE);//自动打开软键盘 
 imm.toggleSoftInput(0, InputMethodManager.HIDE_NOT_ALWAYS); 
 
 }