Android组合式自定义控件实现购物车加减商品操作

2023-09-05 10:06:04 75

publicclassMainActivityextendsAppCompatActivity{ privateAddandmAddand; @Override protectedvoidonCreate(BundlesavedInstanceState){ super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); mAddand=findViewById(R.id.add); mAddand.setOnNumberChangedListener(newAddand.OnNumberChangedListener(){ @Override publicvoidOnNumberChanged(intvs){ Toast.makeText(MainActivity.this,vs+"",Toast.LENGTH_SHORT).show(); } }); } }

publicclassAddandextendsFrameLayoutimplementsView.OnClickListener{ privateImageViewmImage1; privateImageViewmImage2; privateTextViewmText; intvalue; publicAddand(@NonNullContextcontext){ this(context,null); } publicAddand(@NonNullContextcontext,@NullableAttributeSetattrs){ this(context,attrs,0); } publicAddand(@NonNullContextcontext,@NullableAttributeSetattrs,intdefStyleAttr){ super(context,attrs,defStyleAttr); findView(context); } privatevoidfindView(Contextcontext){ Viewview=View.inflate(context,R.layout.add,this); mImage1=view.findViewById(R.id.image1); mImage2=view.findViewById(R.id.image2); mText=view.findViewById(R.id.text); value=getValue(); setValue(value); mImage1.setOnClickListener(this); mImage2.setOnClickListener(this); } privateintvs=1; publicintgetValue(){//获取值 Stringtrim=mText.getText().toString().trim(); if(!TextUtils.isEmpty(trim)){ Integer.valueOf(vs); } returnvs; } publicvoidsetValue(intvalue){ mText.setText(value+""); } @Override publicvoidonClick(Viewview){ switch(view.getId()){ caseR.id.image1: add(); break; caseR.id.image2: jian(); break; } } privatevoidjian(){ if(vs>1){ vs--; setValue(vs); } mOnNumberChangedListener.OnNumberChanged(vs); } privatevoidadd(){ if(vs<6){ vs++; setValue(vs); } mOnNumberChangedListener.OnNumberChanged(vs); } publicinterfaceOnNumberChangedListener{ voidOnNumberChanged(intvs); } privateOnNumberChangedListenermOnNumberChangedListener; publicvoidsetOnNumberChangedListener(OnNumberChangedListeneronNumberChangedListener){ mOnNumberChangedListener=onNumberChangedListener; } }

Android组合式自定义控件实现购物车加减商品操作

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