Android 从txt文件获取MultiAutoCompleteTextView的自动完成列表(重新发布)
有人将此问题标记为重复(),但这根本没有帮助。 我正在重新提出这个问题 // 我只是在学习自己,对android编程和java还很陌生。 我试图从位于内部存储器中的txt文件中获取列表 这就是我所做的Android 从txt文件获取MultiAutoCompleteTextView的自动完成列表(重新发布),android,multiautocompletetextview,Android,Multiautocompletetextview,有人将此问题标记为重复(),但这根本没有帮助。 我正在重新提出这个问题 // 我只是在学习自己,对android编程和java还很陌生。 我试图从位于内部存储器中的txt文件中获取列表 这就是我所做的 try { path = getFilesDir().getAbsolutePath() ; FileInputStream inFs = new FileInputStream(new File(path.t
try {
path = getFilesDir().getAbsolutePath() ;
FileInputStream inFs = new FileInputStream(new File(path.toString() + "/filesitem_" + Type + ".txt"));
byte[] txt = new byte[inFs.available()];
while (inFs.read(txt) != -1) {}
String[] list_item = new String(txt).split(",");
item_actv = (MultiAutoCompleteTextView) dlgView.findViewById(R.id.Item_AutoTxtView);
ArrayAdapter<String> adapter = new ArrayAdapter<>(this, android.R.layout.simple_dropdown_item_1line, list_item);
MultiAutoCompleteTextView.CommaTokenizer token = new MultiAutoCompleteTextView.CommaTokenizer();
item_actv.setTokenizer(token);
item_actv.setAdapter(adapter);
} catch (IOException e) {
Toast.makeText(Activity_list.this, "No item list.", Toast.LENGTH_SHORT).show();
}
itemQuant_np = (NumberPicker) dlgView.findViewById(R.id.ItemQuant_Np);
itemQuant_np.setMinValue(1);
itemQuant_np.setMaxValue(10);
SimpleDateFormat formater = new SimpleDateFormat("yyyy-mm-dd", Locale.KOREA);
Date current = new Date();
date = formater.format(current);
AlertDialog.Builder dlg2 = new AlertDialog.Builder(Activity_list.this)
.setTitle("New List")
.setView(dlgView)
.setPositiveButton("Confirm", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialogInterface, int i) {
try {
path = getFilesDir().getAbsolutePath() + "/" + Type + "_list";
FileOutputStream outFs = new FileOutputStream(new File(path + "/" + date + " list_" + Type + ".txt"), true);
listContent = item_actv.getText().toString() + "\t\t\t" + Integer.toString(itemQuant_np.getValue()) + "\n";
outFs.write(listContent.getBytes());
outFs.close();
Toast.makeText(Activity_list.this, "Saved.", Toast.LENGTH_SHORT).show();
} catch (IOException e) {
Toast.makeText(Activity_list.this, "The file is already exist.", Toast.LENGTH_SHORT).show();
}
}
})
.setNegativeButton("Cancel", null);
dlg2.show();
试试看{
path=getFilesDir().getAbsolutePath();
FileInputStream inFs=newfileinputstream(新文件(path.toString()+“/filesitem_“+Type+”.txt”);
byte[]txt=新字节[inFs.available()];
而(inFs.read(txt)!=-1{}
String[]list_item=新字符串(txt).split(“,”);
item_actv=(MultiAutoCompleteTextView)dlgView.findViewById(R.id.item_AutoTextView);
ArrayAdapter=新的ArrayAdapter(这个,android.R.layout.simple\u下拉菜单项行,列表项);
MultiAutoCompleteTextView.CommaTokenizer标记=新的MultiAutoCompleteTextView.CommaTokenizer();
项目_actv.setTokenizer(令牌);
项目\实际设置适配器(适配器);
}捕获(IOE异常){
Toast.makeText(Activity_list.this,“No item list.”,Toast.LENGTH_SHORT.show();
}
itemQuant\u np=(NumberPicker)dlgView.findViewById(R.id.itemQuant\u np);
itemQuant\u np.setMinValue(1);
itemQuant_np.setMaxValue(10);
SimpleDataFormat格式化程序=新的SimpleDataFormat(“yyyy-mm-dd”,Locale.KOREA);
当前日期=新日期();
日期=格式化程序。格式(当前);
AlertDialog.Builder dlg2=新建AlertDialog.Builder(活动列表)
.setTitle(“新列表”)
.setView(dlgView)
.setPositiveButton(“确认”,新的DialogInterface.OnClickListener(){
@凌驾
公共void onClick(DialogInterface,inti){
试一试{
path=getFilesDir().getAbsolutePath()+“/”+类型+“\u列表”;
FileOutputStream Outps=新的FileOutputStream(新文件(路径+“/”+日期+“列表+”+类型+“.txt”),true);
listContent=item\u actv.getText().toString()+“\t\t\t”+Integer.toString(itemQuant\u np.getValue())+“\n”;
write(listContent.getBytes());
outps.close();
Toast.makeText(Activity_list.this,“Saved.”,Toast.LENGTH_SHORT.show();
}捕获(IOE异常){
Toast.makeText(Activity_list.this,“文件已经存在。”,Toast.LENGTH_SHORT.show();
}
}
})
.setNegativeButton(“取消”,空);
dlg2.show();
单击菜单上的某个项目时,会显示此对话框
它应该做的是显示diglog,当我在MultiAutoCompleteTextView中输入项的名称时,它将显示来自已保存在内部存储器中的txt文件的可用列表。在txt文件中,有以逗号分隔的项目列表(例如:苹果、葡萄、橙色)。如果在填充MultiAutoCompleteTextView并设置项目数量后点击对话框上的确认按钮,它将在指定路径中创建一个新的txt文件
diglog显示正确,但问题是
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setTitle("Manage snacks");
setContentView(R.layout.subactivity);
Intent intent = getIntent();
Type = intent.getStringExtra("Type");
fileList = (ListView) findViewById(R.id.FileList);
arFiles = new ArrayList<>();
File file = new File(getFilesDir().getAbsolutePath() + "/" + Type + "_list");
arFiles.addAll(Arrays.asList(file.list()));
flAdapter = new ArrayAdapter<>(this, android.R.layout.simple_list_item_1, arFiles);
fileList.setAdapter(flAdapter);
fileList.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> adapterView, View view, int i, long l) {
String name = arFiles.get(i);
Intent intent = new Intent(Activity_list.this, Activity_listspec.class);
intent.putExtra("Type", Type);
intent.putExtra("fileName", name);
startActivity(intent);
}
});
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
super.onCreateOptionsMenu(menu);
menu.add(0, 1, 0, "Add new item");
menu.add(0, 2, 0, "Add new list");
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()) {
case 1:
dlgView = View.inflate(Activity_list.this, R.layout.dlg_newitem, null);
edtTxtNewItem = (EditText) dlgView.findViewById(R.id.EdtTxtNewItem);
AlertDialog.Builder dlg1 = new AlertDialog.Builder(Activity_list.this)
.setTitle("New item")
.setView(dlgView)
.setPositiveButton("Confirm", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialogInterface, int i) {
try {
path = getFilesDir().getAbsolutePath();
FileOutputStream outFs = new FileOutputStream(new File(path + "item_" + Type + ".txt"), true);
itemList = edtTxtNewItem.getText().toString() + ",";
outFs.write(itemList.getBytes());
outFs.close();
Toast.makeText(getApplicationContext(), edtTxtNewItem.getText().toString() + " Item added.", 0).show();
} catch (IOException e) {
e.printStackTrace();
}
}
})
.setNegativeButton("Cancel", null);
dlg1.show();
return true;
case 2:
dlgView = View.inflate(Activity_list.this, R.layout.dlg_newlist, null);
try {
path = getFilesDir().getAbsolutePath() ;
FileInputStream inFs = new FileInputStream(new File(path.toString() + "/filesitem_" + Type + ".txt"));
byte[] txt = new byte[inFs.available()];
while (inFs.read(txt) != -1) {}
String[] list_item = new String(txt).split(",");
item_actv = (MultiAutoCompleteTextView) dlgView.findViewById(R.id.Item_AutoTxtView);
ArrayAdapter<String> adapter = new ArrayAdapter<>(this, android.R.layout.simple_dropdown_item_1line, list_item);
MultiAutoCompleteTextView.CommaTokenizer token = new MultiAutoCompleteTextView.CommaTokenizer();
item_actv.setTokenizer(token);
item_actv.setAdapter(adapter);
} catch (IOException e) {
Toast.makeText(Activity_list.this, "No existing list.", Toast.LENGTH_SHORT).show();
}
itemQuant_np = (NumberPicker) dlgView.findViewById(R.id.ItemQuant_Np);
itemQuant_np.setMinValue(1);
itemQuant_np.setMaxValue(10);
SimpleDateFormat formater = new SimpleDateFormat("yyyy-mm-dd", Locale.KOREA);
Date current = new Date();
date = formater.format(current);
AlertDialog.Builder dlg2 = new AlertDialog.Builder(Activity_list.this)
.setTitle("New List")
.setView(dlgView)
.setPositiveButton("Confirm", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialogInterface, int i) {
try {
path = getFilesDir().getAbsolutePath() + "/" + Type + "_list";
FileOutputStream outFs = new FileOutputStream(new File(path + "/" + date + " list_" + Type + ".txt"), true);
listContent = item_actv.getText().toString() + "\t\t\t" + Integer.toString(itemQuant_np.getValue()) + "\n";
outFs.write(listContent.getBytes());
outFs.close();
Toast.makeText(Activity_list.this, "Saved.", Toast.LENGTH_SHORT).show();
} catch (IOException e) {
Toast.makeText(Activity_list.this, "The file is already exist.", Toast.LENGTH_SHORT).show();
}
}
})
.setNegativeButton("Cancel", null);
dlg2.show();
return true;
}
return false;
}
}
@覆盖
创建时受保护的void(Bundle savedInstanceState){
super.onCreate(savedInstanceState);
setTitle(“管理零食”);
setContentView(R.layout.subactivity);
Intent=getIntent();
类型=intent.getStringExtra(“类型”);
fileList=(ListView)findViewById(R.id.fileList);
arFiles=newarraylist();
File File=新文件(getFilesDir().getAbsolutePath()+“/”+类型+“\u列表”);
arFiles.addAll(Arrays.asList(file.list());
flAdapter=newarrayadapter(这是android.R.layout.simple\u list\u item\u 1,arFiles);
setAdapter(flAdapter);
setOnItemClickListener(新的AdapterView.OnItemClickListener(){
@凌驾
公共无效onItemClick(AdapterView AdapterView、View视图、int i、long l){
String name=arFiles.get(i);
意向意向=新意向(Activity\u list.this,Activity\u listspec.class);
意向。额外(“类型”,类型);
intent.putExtra(“文件名”,名称);
星触觉(意向);
}
});
}
@凌驾
公共布尔onCreateOptions菜单(菜单){
super.onCreateOptions菜单(菜单);
添加(0,1,0,“添加新项”);
添加(0,2,0,“添加新列表”);
返回true;
}
@凌驾
公共布尔值onOptionsItemSelected(菜单项项){
开关(item.getItemId()){
案例1:
dlgView=视图.充气(Activity_list.this,R.layout.dlg_newitem,null);
edtTxtNewItem=(EditText)dlgView.findViewById(R.id.edtTxtNewItem);
AlertDialog.Builder dlg1=新建AlertDialog.Builder(活动列表)
.setTitle(“新项目”)
.setView(dlgView)
.setPositiveButton(“确认”,新建DialogInterface.OnCli
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent">
<ListView
android:id="@+id/FileList"
android:layout_width="match_parent"
android:layout_height="match_parent">
</ListView>
</LinearLayout>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:gravity="center">
<EditText
android:id="@+id/EdtTxtNewItem"
android:hint="상품명"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_margin="20dp"/>
</LinearLayout>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="horizontal"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:gravity="center">
<MultiAutoCompleteTextView
android:id="@+id/Item_AutoTxtView"
android:hint="상품명"
android:completionThreshold="3"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:layout_marginLeft="20dp"
android:layout_marginRight="10dp"/>
<NumberPicker
android:id="@+id/ItemQuant_Np"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_margin="10dp">
</NumberPicker>
</LinearLayout>
AlertDialog.Builder dialogBuilder = new AlertDialog.Builder(getActivity());
LayoutInflater inflater = getActivity().getLayoutInflater();
View dialogView = inflater.inflate(R.layout.dlg_newitem, null);
dialogBuilder.setView(dialogView);
dialogBuilder.setTitle("New item");
EditText edtTxtNewItem= (EditText) dialogView.findViewById(R.id.EdtTxtNewItem);
editText.setText("");
dialogBuilder.setPositiveButton("Confirm", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
// TODO Auto-generated method stub
try {
path = getFilesDir().getAbsolutePath();
FileOutputStream outFs = new FileOutputStream(new File(path + "item_" + Type + ".txt"), true);
itemList = edtTxtNewItem.getText().toString() + ",";
outFs.write(itemList.getBytes());
outFs.close();
Toast.makeText(getApplicationContext(), edtTxtNewItem.getText().toString() + " Item added.", 0).show();
} catch (IOException e) {
e.printStackTrace();
}
}
});
dialogBuilder.setNegativeButton("Cancel", null);
AlertDialog alertDialog = dialogBuilder.create();
alertDialog.show();