第一项活动：gridview，只要您点击gridview item dialogBox，就会打开包含微调器的活动。现在，我想在第二个Gridview包含item中显示已选定的spinner Activity和选定的Listview值。当您在第二次点击时，listview中的值将被替换，但不会添加。
任何人都可以帮助我............
... MainActivity
public class MainActivity extends Activity implements OnClickListener {
SharedPreferences SharedPrefs;
String sp_selected;
Spinner sp;
String s1;
String partname;
String partname1;
Button Parts_history;
Imageadapter image_adapter;
private static final String[] paths = { "Select Your Choice", "Type1",
"Type2", "Type3", "Type4" };
private static final int position = 0;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
this.requestWindowFeature(Window.FEATURE_NO_TITLE);
setContentView(R.layout.partsrepair);
image_adapter = new Imageadapter(this);
SharedPrefs = getSharedPreferences("Preference", MODE_PRIVATE);
GridView gridview = (GridView) findViewById(R.id.gridView1);
gridview.setAdapter(new Imageadapter(this));
Parts_history = (Button) findViewById(R.id.partshistory_button);
Parts_history.setOnClickListener((this));
gridview.setOnItemClickListener(new OnItemClickListener() {
public void onItemClick(final AdapterView<?> parent, View v,
int position, long id) {
SharedPreferences.Editor edit = SharedPrefs.edit();
// partname = parent.getItemAtPosition(position).toString();
partname1 = image_adapter.names[position].toString();
image_adapter.names[position].toString();
Toast.makeText(MainActivity.this, "you Selected:" + partname1,
Toast.LENGTH_SHORT).show();
// edit.putString("SelectPart", partname1);
final Dialog dialog = new Dialog(MainActivity.this);
dialog.requestWindowFeature(Window.FEATURE_NO_TITLE);
dialog.setContentView(R.layout.repairtype_spinner);
dialog.setCancelable(true);
Spinner sp = (Spinner) dialog.findViewById(R.id.spinner_1);
ArrayAdapter<String> adapter = new ArrayAdapter<String>(
MainActivity.this,
android.R.layout.simple_spinner_item,paths);
sp.setAdapter(adapter);
sp.setOnItemSelectedListener(new OnItemSelectedListener() {
@Override
public void onItemSelected(AdapterView<?> parent,
View view, int position, long id) {
if (position > 0) {
sp_selected = parent.getItemAtPosition(position)
.toString();
}
}
@Override
public void onNothingSelected(AdapterView<?>arg0) {
// TODO Auto-generated method stub
}
});
Button btnOk = (Button)dialog.findViewById(R.id.Button_sms_ok);
btnOk.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
SharedPreferences.Editor edit = SharedPrefs.edit();
if ((sp_selected != null)
&& !sp_selected.equals("Select Your Choice")) { //
edit.putString("SelectType", sp_selected);
Toast.makeText(getApplicationContext(),
"You selected:" + sp_selected,
Toast.LENGTH_SHORT).show();
Toast.makeText(getApplicationContext(),
"Thank You!", Toast.LENGTH_LONG).show();
dialog.dismiss();
} else {
Toast.makeText(MainActivity.this,
"plz Select your Choice",
Toast.LENGTH_SHORT).show();
}} });
dialog.show(); }});}
public void onClick(View v) {
switch (v.getId()) {
case R.id.partshistory_button:
Intent intent = new Intent(MainActivity.this, ListViewItems.class);
intent.putExtra("Part", partname1);
intent.putExtra("Type", sp_selected);
startActivity(intent);
finish();
}}}
listview.class
public class ListViewItems extends Activity {
ArrayList<String> part, type;
ListView list;
public ListViewItems() {
// TODO Auto-generated constructor stub
part = new ArrayList<String>();
type = new ArrayList<String>();
}
@Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.sms_summary);
Intent i = getIntent();
part.add(i.getStringExtra("Part"));
type.add(i.getStringExtra("Type"));
list = (ListView) findViewById(R.id.listView1);
ArrayAdapter<String> adapter = new ArrayAdapter<String>(
getBaseContext(), R.layout.listview, type);
list.setAdapter(new CustomViewAdapter(ListViewItems.this));
adapter.notifyDataSetChanged();
}
public class CustomViewAdapter extends BaseAdapter {
Context context;
public CustomViewAdapter(Context context) {
// TODO Auto-generated constructor stub
this.context = context;
}
private class ViewHolder {
TextView text_part;
TextView text_type;
}
public View getView(int position, View convertView, ViewGroup parent) {
ViewHolder holder = null;
// Log.d("hao",""+position);
LayoutInflater minflater = (LayoutInflater) context
.getSystemService(Activity.LAYOUT_INFLATER_SERVICE);
if (convertView == null) {
convertView = minflater.inflate(R.layout.listview, null);
holder = new ViewHolder();
holder.text_part = (TextView) convertView
.findViewById(R.id.textView1);
// Log.d("hao", ""+holder.text_desc);
holder.text_type = (TextView) convertView
.findViewById(R.id.textView2);
convertView.setTag(holder);
}
else
holder = (ViewHolder) convertView.getTag();
holder.text_type.setText(type.get(position));
holder.text_part.setText(part.get(position));
return convertView;
}
@Override
public int getCount() {
// TODO Auto-generated method stub
return part.size();
}
@Override
public Object getItem(int position) {
// TODO Auto-generated method stub
return position;
}
@Override
public long getItemId(int position) {
// TODO Auto-generated method stub
return position;
}
}}
Imageadapter.class
public class Imageadapter extends BaseAdapter {
private Context mContext;
private LayoutInflater mlayoutinflater;
public Imageadapter(Context c) {
mContext = c;
mlayoutinflater = LayoutInflater.from(c);
}
public int getCount() {
return mThumbIds.length;
}
public Object getItem(int position) {
return position;
}
public long getItemId(int position) {
return position;
}
class ViewHolder {
ImageView imageView;
TextView textView;
}
public View getView(int position, View convertView, ViewGroup parent) {
ImageView imageView;
ViewHolder childHolder;
if (convertView == null) {
// if it's not recycled, initialize some
convertView = mlayoutinflater.inflate(R.layout.partsnames, null);
childHolder = new ViewHolder();
childHolder.imageView = (ImageView) convertView
.findViewById(R.id.imageView1);
childHolder.textView = (TextView) convertView
.findViewById(R.id.textView1);
convertView.setTag(childHolder);
} else {
childHolder = (ViewHolder) convertView.getTag();
}
childHolder.imageView.setImageResource(mThumbIds[position]);
childHolder.textView.setText(names[position]);
return convertView;
}
public Integer[] mThumbIds = { R.drawable.ic_launcher, R.drawable.ic_launcher,
R.drawable.ic_launcher, R.drawable.ic_launcher,R.drawable.ic_launcher,
R.drawable.ic_launcher, R.drawable.ic_launcher, };
public String[] names = { "First", "Second", "Third", "Fourth",
"Fifth", "Sixth", "Seventh" };
}
答案 0 :(得分：0)
似乎价值并未真正被覆盖。每次加载第二个活动时，都会创建新的零件和类型ArrayLists。在这些新列表中，只添加了最新的部分和类型（在onCreate函数中），这些部分和类型已经与意图一起旅行。
如果您希望列表继续添加用户选择的部件和类型，您可以维护MainActivity上的列表。因此，在选择每个项目和类型后，将其添加到MainActivity上的列表中，然后将其传递给ListViewItems活动。
这样，列表将始终包含您选择的所有项目。
我必须承认，如果我理解你的问题，我并不是百分百肯定。但我试着尽可能多地回答。
编辑：
MainActivity：
public class MainActivity extends ActionBarActivity {
ArrayList<String> list;
int clickCount = 0;
static TextView textViewHelloWorld;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
try {
list = new ArrayList<String>();
textViewHelloWorld = (TextView) findViewById(R.id.textViewHelloWorld);
Button buttonAddElements = (Button) findViewById(R.id.buttonAddElement);
buttonAddElements.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
clickCount = clickCount + 1;
textViewHelloWorld.setText("Click Count" + clickCount);
list.add("Click number " + clickCount);
}
});
Button buttonStartNewActivity = (Button) findViewById (R.id.buttonStartNewActivity);
buttonStartNewActivity.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
Bundle bundle = new Bundle();
bundle.putStringArrayList("list", list);
startActivity(new Intent(MainActivity.this, Main2Activity.class).putExtras(bundle));
}
});
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
/**
* A placeholder fragment containing a simple view.
*/
public static class PlaceholderFragment extends Fragment {
public PlaceholderFragment() {
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.fragment_main, container,
false);
return rootView;
}
}
}
Main2Activity :( ListView活动）：
public class Main2Activity extends ActionBarActivity {
ArrayList<String> list;
ListView listView;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main2);
list = getIntent().getStringArrayListExtra("list");
listView = (ListView) findViewById(R.id.listViewList);
String []dsf = new String[list.size()];
list.toArray(dsf);
listView.setAdapter(new ArrayAdapter<String>(this,
android.R.layout.simple_list_item_1, dsf));
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main2, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
/**
* A placeholder fragment containing a simple view.
*/
public static class PlaceholderFragment extends Fragment {
public PlaceholderFragment() {
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.fragment_main2,
container, false);
return rootView;
}
}
}
EDIT2： MainActivity.Java
public class MainActivity extends Activity implements OnClickListener {
SharedPreferences SharedPrefs;
String sp_selected;
Spinner sp;
String s1;
String partname;
String partname1;
Button Parts_history;
private ArrayList<String> parts;
private ArrayList<String> types;
Imageadapter image_adapter;
private static final String[] paths = { "Select Your Choice", "Type1",
"Type2", "Type3", "Type4" };
private static final int position = 0;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
this.requestWindowFeature(Window.FEATURE_NO_TITLE);
setContentView(R.layout.partsrepair);
image_adapter = new Imageadapter(this);
parts = new ArrayList<String>();
types = new ArrayList<String>();
SharedPrefs = getSharedPreferences("Preference", MODE_PRIVATE);
GridView gridview = (GridView) findViewById(R.id.gridView1);
gridview.setAdapter(new Imageadapter(this));
Parts_history = (Button) findViewById(R.id.partshistory_button);
Parts_history.setOnClickListener((this));
gridview.setOnItemClickListener(new OnItemClickListener() {
public void onItemClick(final AdapterView<?> parent, View v,
int position, long id) {
SharedPreferences.Editor edit = SharedPrefs.edit();
// partname = parent.getItemAtPosition(position).toString();
partname1 = image_adapter.names[position].toString();
parts.add(partname1);
image_adapter.names[position].toString();
Toast.makeText(MainActivity.this, "you Selected:" + partname1,
Toast.LENGTH_SHORT).show();
// edit.putString("SelectPart", partname1);
final Dialog dialog = new Dialog(MainActivity.this);
dialog.requestWindowFeature(Window.FEATURE_NO_TITLE);
dialog.setContentView(R.layout.repairtype_spinner);
dialog.setCancelable(true);
Spinner sp = (Spinner) dialog.findViewById(R.id.spinner_1);
ArrayAdapter<String> adapter = new ArrayAdapter<String>(
MainActivity.this,
android.R.layout.simple_spinner_item,paths);
sp.setAdapter(adapter);
sp.setOnItemSelectedListener(new OnItemSelectedListener() {
@Override
public void onItemSelected(AdapterView<?> parent,
View view, int position, long id) {
if (position > 0) {
sp_selected = parent.getItemAtPosition(position)
.toString();
types.add(sp_selected);
}
}
@Override
public void onNothingSelected(AdapterView<?>arg0) {
// TODO Auto-generated method stub
}
});
Button btnOk = (Button)dialog.findViewById(R.id.Button_sms_ok);
btnOk.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
SharedPreferences.Editor edit = SharedPrefs.edit();
if ((sp_selected != null)
&& !sp_selected.equals("Select Your Choice")) { //
edit.putString("SelectType", sp_selected);
Toast.makeText(getApplicationContext(),
"You selected:" + sp_selected,
Toast.LENGTH_SHORT).show();
Toast.makeText(getApplicationContext(),
"Thank You!", Toast.LENGTH_LONG).show();
dialog.dismiss();
} else {
Toast.makeText(MainActivity.this,
"plz Select your Choice",
Toast.LENGTH_SHORT).show();
}} });
dialog.show(); }});}
public void onClick(View v) {
switch (v.getId()) {
case R.id.partshistory_button:
Bundle bundle = new Bundle();
bundle.putStringArrayList("parts", parts);
bundle.putStringArrayList("type", types);
Intent intent = new Intent(MainActivity.this, ListViewItems.class);
intent.putExtra("Part", partname1);
intent.putExtra("Type", sp_selected);
intent.putExtra("bundle", bundle);
startActivity(intent);
finish();
}}}
的ListView：
public class ListViewItems extends Activity {
ArrayList<String> part, type;
ListView list;
public ListViewItems() {
// TODO Auto-generated constructor stub
part = new ArrayList<String>();
type = new ArrayList<String>();
}
@Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.sms_summary);
Intent i = getIntent();
// part.add(i.getStringExtra("Part"));
// type.add(i.getStringExtra("Type"));
part = i.getExtras().getBundle("bundle").getStringArrayList("parts");
type = i.getExtras().getBundle("bundle").getStringArrayList("types");
list = (ListView) findViewById(R.id.listView1);
ArrayAdapter<String> adapter = new ArrayAdapter<String>(
getBaseContext(), R.layout.listview, type);
list.setAdapter(new CustomViewAdapter(ListViewItems.this));
adapter.notifyDataSetChanged();
}
public class CustomViewAdapter extends BaseAdapter {
Context context;
public CustomViewAdapter(Context context) {
// TODO Auto-generated constructor stub
this.context = context;
}
private class ViewHolder {
TextView text_part;
TextView text_type;
}
public View getView(int position, View convertView, ViewGroup parent) {
ViewHolder holder = null;
// Log.d("hao",""+position);
LayoutInflater minflater = (LayoutInflater) context
.getSystemService(Activity.LAYOUT_INFLATER_SERVICE);
if (convertView == null) {
convertView = minflater.inflate(R.layout.listview, null);
holder = new ViewHolder();
holder.text_part = (TextView) convertView
.findViewById(R.id.textView1);
// Log.d("hao", ""+holder.text_desc);
holder.text_type = (TextView) convertView
.findViewById(R.id.textView2);
convertView.setTag(holder);
}
else
holder = (ViewHolder) convertView.getTag();
holder.text_type.setText(type.get(position));
holder.text_part.setText(part.get(position));
return convertView;
}
@Override
public int getCount() {
// TODO Auto-generated method stub
return part.size();
}
@Override
public Object getItem(int position) {
// TODO Auto-generated method stub
return position;
}
@Override
public long getItemId(int position) {
// TODO Auto-generated method stub
return position;
}
}}