Android 当singleitemview关闭并重新打开时,按钮图像会发生更改
我有一个listview,单击listitem会打开一个新的SingleItemView活动 SingleItem视图包含一个按钮,用于将相应的listitem添加到“收藏夹”活动(如果尚未添加),并将按钮颜色更改为黄色,表示已将其添加到favoorites中,如果未添加到“收藏夹”中,则将按钮颜色更改为灰色 在这里,一切正常,但如果我关闭singleitemview并重新打开它,按钮的颜色会变回以前的颜色,但仍然是facvorites 我该怎么做才能保留按钮的颜色 单击我的列表活动Android 当singleitemview关闭并重新打开时,按钮图像会发生更改,android,listview,button,Android,Listview,Button,我有一个listview,单击listitem会打开一个新的SingleItemView活动 SingleItem视图包含一个按钮,用于将相应的listitem添加到“收藏夹”活动(如果尚未添加),并将按钮颜色更改为黄色,表示已将其添加到favoorites中,如果未添加到“收藏夹”中,则将按钮颜色更改为灰色 在这里,一切正常,但如果我关闭singleitemview并重新打开它,按钮的颜色会变回以前的颜色,但仍然是facvorites 我该怎么做才能保留按钮的颜色 单击我的列表活动 publi
public void onItemClick(AdapterView<?> parent, View view, int position,
long id) {
ObjectMapper mapper = new ObjectMapper();
Product pro = productListAdapter.getItem(position);
String favimg = ((ImageView) view.findViewById(R.id.imgbtn_favorite)).toString();
try
{
String hi = "this is testint";
String jsonInString = mapper.writeValueAsString(pro);
Intent intent = new Intent(activity.getApplicationContext(), SingleItemView.class);
intent.putExtra("selected item", jsonInString);
;
startActivityForResult(intent, 1);
// startActivity(intent);
}
catch (JsonProcessingException e)
{}
}
final Button btn = (Button) findViewById(R.id.singleitemButton1);
btn.setOnClickListener(new OnClickListener(){
@Override
public void onClick(View v){
products=new ArrayList<Product>();
Bundle extras = getIntent().getExtras();
String jsonObj = extras.getString("selected item");
ObjectMapper mapper = new ObjectMapper();
try
{
Product pro = mapper.readValue(jsonObj, Product.class);
if (checkFavoriteItem(pro)) {
sharedPreference.removeFavorite(SingleItemView.this, pro);
btn.setBackgroundColor(Color.GRAY);
Toast.makeText(SingleItemView.this,
SingleItemView.this.getResources().getString(R.string.remove_favr),
Toast.LENGTH_SHORT).show();
} else {
sharedPreference.addFavorite(SingleItemView.this, pro);
Toast.makeText(SingleItemView.this,
SingleItemView.this.getResources().getString(R.string.add_favr),
Toast.LENGTH_SHORT).show();
btn.setBackgroundColor(Color.YELLOW);
}
}
catch (IOException e)
{};
});
public void onItemClick(AdapterView父视图、视图、int位置、,
长id){
ObjectMapper mapper=新的ObjectMapper();
Product pro=productListAdapter.getItem(位置);
字符串favimg=((ImageView)view.findviewbyd(R.id.imgbtn_favorite)).toString();
尝试
{
String hi=“这是测试”;
字符串jsonInString=mapper.writeValueAsString(pro);
Intent Intent=new Intent(activity.getApplicationContext(),SingleItemView.class);
intent.putExtra(“选定项”,jsonInString);
;
startActivityForResult(意向,1);
//星触觉(意向);
}
捕获(JsonProcessingException e)
{}
}
singleitemview活动的favbtn
public void onItemClick(AdapterView<?> parent, View view, int position,
long id) {
ObjectMapper mapper = new ObjectMapper();
Product pro = productListAdapter.getItem(position);
String favimg = ((ImageView) view.findViewById(R.id.imgbtn_favorite)).toString();
try
{
String hi = "this is testint";
String jsonInString = mapper.writeValueAsString(pro);
Intent intent = new Intent(activity.getApplicationContext(), SingleItemView.class);
intent.putExtra("selected item", jsonInString);
;
startActivityForResult(intent, 1);
// startActivity(intent);
}
catch (JsonProcessingException e)
{}
}
final Button btn = (Button) findViewById(R.id.singleitemButton1);
btn.setOnClickListener(new OnClickListener(){
@Override
public void onClick(View v){
products=new ArrayList<Product>();
Bundle extras = getIntent().getExtras();
String jsonObj = extras.getString("selected item");
ObjectMapper mapper = new ObjectMapper();
try
{
Product pro = mapper.readValue(jsonObj, Product.class);
if (checkFavoriteItem(pro)) {
sharedPreference.removeFavorite(SingleItemView.this, pro);
btn.setBackgroundColor(Color.GRAY);
Toast.makeText(SingleItemView.this,
SingleItemView.this.getResources().getString(R.string.remove_favr),
Toast.LENGTH_SHORT).show();
} else {
sharedPreference.addFavorite(SingleItemView.this, pro);
Toast.makeText(SingleItemView.this,
SingleItemView.this.getResources().getString(R.string.add_favr),
Toast.LENGTH_SHORT).show();
btn.setBackgroundColor(Color.YELLOW);
}
}
catch (IOException e)
{};
});
final按钮btn=(按钮)findViewById(R.id.singleitemButton1);
btn.setOnClickListener(新的OnClickListener(){
@凌驾
公共void onClick(视图v){
products=新的ArrayList();
Bundle extras=getIntent().getExtras();
String jsonObj=extras.getString(“选定项”);
ObjectMapper mapper=新的ObjectMapper();
尝试
{
Product pro=mapper.readValue(jsonObj,Product.class);
如果(选中FavoriteItem(pro)){
SharedReference.removeFavorite(SingleItemView.this,pro);
btn.setBackgroundColor(颜色为灰色);
Toast.makeText(SingleItemView.this,
SingleItemView.this.getResources().getString(R.string.remove_favr),
吐司。长度(短)。show();
}否则{
SharedReference.addFavorite(SingleItemView.this,pro);
Toast.makeText(SingleItemView.this,
SingleItemView.this.getResources().getString(R.string.add_favr),
吐司。长度(短)。show();
btn.setBackgroundColor(颜色:黄色);
}
}
捕获(IOE异常)
{};
});