我想根据textview更改更改我的微调器值。 Spinner值应该根据textview更改从数据库中获取数据。如果我选择textview，目前没有变化。
根据以下代码，如果textview正在更改，则微调器不会更改。谷歌搜索但不成功的结果。你能帮忙吗？
MainActivity.java
package com.bar.example.myapplication;
public class MainActivity extends AppCompatActivity {
public static final String BARCODE_KEY = "BARCODE";
EditText date;
DatePickerDialog datePickerDialog;
Spinner s1, s2, s3;
Button btnAdd;
Button send;
Button ok;
Button ok1;
private TextView result1;
Button btn_send_mail;
private Button button3;
private Button btnexport;
EditText inputLabel, s6;
TextView tex, tex1, bResult;
DatabaseHandler dbhndlr;
Cursor spinner1csr, spinner2csr, spinner3csr, spinner4csr, search;
SimpleCursorAdapter sca, sca2, sca3, sca4, sca6;
long spinner1_selected = 0;
CheckBox ck1, ck2, ck3, ck4, ck5, ck6, ck7, ck8;
private SimpleDateFormat mSimpleDateFormat;
private PeriodFormatter mPeriodFormat;
private Date startDate;
private Date endDate;
private Date birthDate;
private TextView tvStartDate, tvEndDate, tvDifferenceStandard, tvDifferenceCustom, tvBirthDate, tvAgeStandard, tvAgeCustom;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
s1 = (Spinner) findViewById(R.id.spinner1);
s2 = (Spinner) findViewById(R.id.spinner2);
s3 = (Spinner) findViewById(R.id.spinner5);
final TextView bResult = (TextView) findViewById(R.id.barcodeResult);
final EditText s6 = (EditText) findViewById(R.id.editText5);
btnAdd = (Button) findViewById(R.id.btn_add);
inputLabel = (EditText) findViewById(R.id.input_label);
dbhndlr = new DatabaseHandler(this);
if (DatabaseUtils.queryNumEntries(
dbhndlr.getWritableDatabase(),
DatabaseHandler.TABLE_LABELS) < 1) {
dbhndlr.insertlabel("Ships", "12344", "9133");
dbhndlr.insertlabel("Boat", "93993", "9045");
}
spinner1csr = dbhndlr.getAllLabelsAsCursor();
sca = new SimpleCursorAdapter(this,
android.R.layout.simple_list_item_1, spinner1csr,
new String[] {
DatabaseHandler.KEY_ID
},
new int[] {
android.R.id.text1
},
0
);
s1.setAdapter(sca);
s1.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
@Override
public void onItemSelected(AdapterView << ? > parent, View view, int position, long id) {
spinner1_selected = id;
spinner2csr = dbhndlr.getByRowid(spinner1_selected);
spinner3csr = dbhndlr.getByRowid(spinner1_selected);
spinner4csr = dbhndlr.getByRowid(spinner1_selected);
bResult.setText(spinner1csr.getString(spinner1csr.getColumnIndex(DatabaseHandler.KEY_ID1)));
sca2.swapCursor(spinner2csr);
sca3.swapCursor(spinner3csr);
sca4.swapCursor(spinner4csr);
}
@Override
public void onNothingSelected(AdapterView << ? > parent) {}
});
s6.addTextChangedListener(new TextWatcher() {
@Override
public void beforeTextChanged(CharSequence s, int start, int count, int after) {
}
@Override
public void onTextChanged(CharSequence s, int start, int before, int count) {
{
}
}
@Override
public void afterTextChanged(Editable s) {
try {
int nPosition = Integer.parseInt(s.toString());
if (nPosition >= 1 && nPosition <= 12)
s1.setSelection(nPosition - 1);
} catch (NumberFormatException nfe) {}
}
});
spinner2csr = dbhndlr.getByRowid(spinner1_selected);
sca2 = new SimpleCursorAdapter(this,
android.R.layout.simple_list_item_1,
spinner2csr,
new String[] {
DatabaseHandler.KEY_NAME
},
new int[] {
android.R.id.text1
},
0
);
s2.setAdapter(sca2);
spinner3csr = dbhndlr.getByRowid(spinner1_selected);
sca3 = new SimpleCursorAdapter(this,
android.R.layout.simple_list_item_1,
spinner3csr,
new String[] {
DatabaseHandler.KEY_ID1
},
new int[] {
android.R.id.text1
},
0
);
s3.setAdapter(sca3);
spinner4csr = dbhndlr.getByRowid(spinner1_selected);
sca4 = new SimpleCursorAdapter(this,
android.R.layout.simple_list_item_1,
spinner4csr,
new String[] {
DatabaseHandler.KEY_ID1
},
new int[] {
android.R.id.text1
},
0
);
btnAdd.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View arg0) {
String label = inputLabel.getText().toString();
if (label.trim().length() > 0) {
inputLabel.setText("");
bResult.setText("");
InputMethodManager imm = (InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE);
imm.hideSoftInputFromWindow(inputLabel.getWindowToken(), 0);
spinner1csr = dbhndlr.getAllLabelsAsCursor();
spinner2csr = dbhndlr.getByRowid(spinner1_selected);
spinner3csr = dbhndlr.getByRowid(spinner1_selected);
spinner4csr = dbhndlr.getByRowid(spinner1_selected);
sca.swapCursor(spinner1csr);
sca2.swapCursor(spinner2csr);
sca3.swapCursor(spinner3csr);
sca4.swapCursor(spinner4csr);
} else {
Toast.makeText(getApplicationContext(), "Please enter label name",
Toast.LENGTH_SHORT).show();
}
}
});
}
@Override
public void onDestroy() {
spinner1csr.close();
spinner2csr.close();
spinner3csr.close();
spinner4csr.close();
super.onDestroy();
}
}
package com.bar.example.myapplication;
public class DatabaseHandler extends SQLiteOpenHelper {
private static final int DATABASE_VERSION = 1;
private static final String DATABASE_NAME = "spinnerExample";
public static final String TABLE_LABELS = "labels"; //<<<< Made public
public static final String KEY_ID = "id"; //<<<< Made public
public static final String KEY_NAME = "name";
public static final String KEY_ID1 = "barcode"; //<<<< made public
public static final String KEY_ID2 = "barcode1";
public DatabaseHandler(Context context) {
super(context, DATABASE_NAME, null, DATABASE_VERSION);
}
@Override
public void onCreate(SQLiteDatabase db) {
String CREATE_CATEGORIES_TABLE = "CREATE TABLE " + TABLE_LABELS + "(" +
KEY_ID + " TEXT," + KEY_NAME + " TEXT," + KEY_ID1 + " TEXT," + KEY_ID2 + " TEXT)";
db.execSQL(CREATE_CATEGORIES_TABLE);
}
@Override
public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
db.execSQL("DROP TABLE IF EXISTS " + TABLE_LABELS);
onCreate(db);
}
public void insertlabel(String id, String label, String label1) {
SQLiteDatabase db = this.getWritableDatabase();
ContentValues cv = new ContentValues();
cv.put(KEY_ID, id);
cv.put(KEY_NAME, label);
cv.put(KEY_ID1, label1);
db.insert(TABLE_LABELS, null, cv);
db.close();
}
public List < String > getAllLabels() {
List < String > labels = new ArrayList < String > ();
String selectQuery = "SELECT * FROM " + TABLE_LABELS;
SQLiteDatabase db = this.getReadableDatabase();
Cursor cursor = db.rawQuery(selectQuery, null);
if (cursor.moveToFirst()) {
do {
labels.add(cursor.getString(0));
} while (cursor.moveToNext());
}
cursor.close();
db.close();
return labels;
}
public Cursor getAllLabelsAsCursor() {
String[] columns = new String[] {
"rowid AS _id, *"
}; // Need _id column for SimpleCursorAdapter
return this.getWritableDatabase().query(TABLE_LABELS, columns, null, null, null, null, null);
}
public Cursor getAllLabelsExceptedSelected(long selected) {
String[] columns = new String[] {
"rowid AS _id, *"
};
String whereclause = "rowid <> ?";
String[] whereargs = new String[] {
String.valueOf(selected)
};
return this.getWritableDatabase().query(TABLE_LABELS,
columns,
whereclause,
whereargs,
null,
null,
null
);
}
public Cursor getByRowid(long id) {
String[] columns = new String[] {
"rowid AS _id, *"
};
return this.getWritableDatabase().query(
TABLE_LABELS,
columns,
"rowid=?",
new String[] {
String.valueOf(id)
},
null, null, null
);
}
}
答案 0 :(得分：2)
我在谷歌上花了更多时间后得到了同样的解决办法：）
但是这个答案会在点击按钮时将edittext值插入到微调器中。
但任何人都知道如何使用textwatcher破解相同的内容。就像微调器应该从edittext中输入值而不单击按钮??
public class MainActivity extends Activity {
List < String > li;
Spinner sp1, sp2;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
li = new ArrayList < String > ();
li.add("Data 1");
li.add("Data 2");
sp1 = (Spinner) findViewById(R.id.spinner1);
sp2 = (Spinner) findViewById(R.id.spinner2);
Button b = (Button) findViewById(R.id.button1);
final EditText et = (EditText) findViewById(R.id.editText1);
call();
b.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
li.add(et.getText().toString());
et.setText(null);
call();
}
});
}
public void call() {
// TODO Auto-generated method stub
ArrayAdapter < String > adp = new ArrayAdapter < String > (this,
android.R.layout.simple_dropdown_item_1line, li);
adp.setDropDownViewResource(android.R.layout.simple_dropdown_item_1line);
sp1.setAdapter(adp);
sp2.setAdapter(adp);
sp1.setSelection((li.size() - 1));
sp1.setOnItemSelectedListener(new OnItemSelectedListener() {
@Override
public void onItemSelected(AdapterView << ? > arg0, View arg1, int arg2, long arg3) {
// TODO Auto-generated method stub
sp2.setSelection(arg2);
}
@Override
public void onNothingSelected(AdapterView << ? > arg0) {
// TODO Auto-generated method stub
}
});
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.activity_main, menu);
return true;
}
}
布局
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent">
<Spinner android:id="@+id/spinner1" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_alignParentLeft="true" android:layout_alignParentTop="true" android:layout_marginLeft="34dp" android:layout_marginTop="74dp" />
<Spinner android:id="@+id/spinner2" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_alignParentRight="true" android:layout_alignParentTop="true" android:layout_marginTop="74dp" android:layout_marginRight="34dp"
/>
<EditText android:id="@+id/editText1" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_alignParentLeft="true" android:layout_alignParentTop="true" android:layout_marginTop="19dp" android:ems="10" android:inputType="textPersonName"
/>
<Button android:id="@+id/button1" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_alignBottom="@+id/editText1" android:layout_alignParentRight="true" android:text="Button" />
</RelativeLayout>