根据“+”号，获取数字图片，数值变大变小，温度上升，降低

笨死了，学的东西全白了

用了最笨的方法实现图片切换，数值变大变小功能，分享一下，希望能帮助一些人吧

布局就不贴了：就是上下两个imageButton，用于响应事件；和5个imageView，用于显示温度，实现温度的变化。看效果图就明白了。

1、效果图：



2、将0-9的图片放入resource.xml中

<?xml version="1.0" encoding="utf-8"?>
<resources>
<integer-array name = "temperatureNum_imgsArray">
<item >@drawable/as1</item>
<item >@drawable/as2</item>
<item >@drawable/as3</item>
<item >@drawable/as4</item>
<item >@drawable/as5</item>
<item >@drawable/as6</item>
<item >@drawable/as7</item>
<item >@drawable/as8</item>
<item >@drawable/as9</item>
<item >@drawable/as0</item>
</integer-array>
</resources>


3、功能实现的方法AirConditionHomeActivity：

private String TAG = "Demo666";

ImageButton btn_temperature_plus_right; //右侧温度升降
ImageButton btn_temperature_min_right;
ImageView img_num_first_right;
ImageView img_num_second_right;
ImageView img_num_third_right;
ImageView img_num_points_right;
ImageView img_num_unit_right;

double temRightCount = 18.0;
double tempMax = 32.0;
double tempMin = 18.0;
int numFirst = 0;
int numSecond = 0;
int numThird = 0;

@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_NO_TITLE);
setContentView(R.layout.air_condition_home_activity);

btn_temperature_plus_right = (ImageButton)findViewById(R.id.temperature_plus_right);
btn_temperature_min_right = (ImageButton)findViewById(R.id.temperature_min_right);
img_num_first_right = (ImageView)findViewById(R.id.num_first_right);
img_num_second_right = (ImageView)findViewById(R.id.num_second_right);
img_num_third_right = (ImageView)findViewById(R.id.num_third_right);
img_num_points_right = (ImageView)findViewById(R.id.num_points_right);
img_num_unit_right = (ImageView)findViewById(R.id.num_unit_right);

btn_temperature_plus_right.setOnTouchListener(AirConditionHomeActivity.this);
btn_temperature_min_right.setOnTouchListener(AirConditionHomeActivity.this);
}

@Override
public boolean onTouch(View v, MotionEvent event) {
if(event.getAction() == MotionEvent.ACTION_DOWN){
switch(v.getId()){
case R.id.temperature_plus_right:
temRightCount = temRightCount+0.5;
getRightTempNum();
if(temRightCount >= tempMax) {
Toast mToast = Toast.makeText(getApplicationContext(), "已至最高气温", Toast.LENGTH_SHORT);
mToast.show();
}
break;
case R.id.temperature_min_right:
temRightCount = temRightCount-0.5;
getRightTempNum();
if(temRightCount <= tempMin) {
Toast mToast = Toast.makeText(getApplicationContext(), "已至最低气温", Toast.LENGTH_SHORT);
mToast.show();
}
break;
}
}
return false;
}

//获取气温右侧数值位数
public void getRightTempNum(){
if(temRightCount * 10 > 100){ //计算出个位、十位急小数点后的位数，如23.5 : 200/100=2; 35/10=3;余5
numFirst =(int)(temRightCount*10)/100 ; //温度的第一张图片位置：十位
numSecond = (int)((temRightCount*10)-numFirst*100)/10;//温度的第二张图片位置：个位
numThird = (int)((temRightCount*10)-numFirst*100)%10;//温度的第三张图片位置：小数点后位
}
if(temRightCount >= tempMin && temRightCount <= tempMax){ // 18 <= temLeftCount <= 32
switch(numFirst){ //第一位数值：1，2，3
case 3:
img_num_first_right.setBackgroundResource(R.drawable.as3);
break;
case 2:
img_num_first_right.setBackgroundResource(R.drawable.as2);
break;
case 1:
img_num_first_right.setBackgroundResource(R.drawable.as1);
break;
}
switch(numSecond){//第二位数值：1-9
case 0:
img_num_second_right.setBackgroundResource(R.drawable.as0);
break;
case 1:
img_num_second_right.setBackgroundResource(R.drawable.as1);
break;
case 2:
img_num_second_right.setBackgroundResource(R.drawable.as2);
break;
case 3:
img_num_second_right.setBackgroundResource(R.drawable.as3);
break;
case 4:
img_num_second_right.setBackgroundResource(R.drawable.as4);
break;
case 5:
img_num_second_right.setBackgroundResource(R.drawable.as5);
break;
case 6:
img_num_second_right.setBackgroundResource(R.drawable.as6);
break;
case 7:
img_num_second_right.setBackgroundResource(R.drawable.as7);
break;
case 8:
img_num_second_right.setBackgroundResource(R.drawable.as8);
break;
case 9:
img_num_second_right.setBackgroundResource(R.drawable.as9);
break;
}
switch(numThird){//第三位数值：0和0.5
case 0:
img_num_third_right.setBackgroundResource(R.drawable.as0);
break;
case 5:
img_num_third_right.setBackgroundResource(R.drawable.as5);
break;
}
}

}
}