Question

我能够根据第一个微调器的选择来更改第二个和第三个微调器。

问题是第二个微调器，未根据需要显示。

示例：表名称为“ TABLE_LABELS”，而列（KEY_99 + ROUTE，KEY_ID，KEY_NAME）和数据为（（“ 1”，“ 9001234”，“ 1超市”，“ N1”）；（“ 2”，“ 9004567“，2 Supermarket”，“ N1”）;（“ 3”，“ 9003562”，“ 2 Hypermarket”，“ N2”）;（“ 4”，“ 9003561”，“ 4 oria”，“ N2”）; （“ 5”，“ 9003565”，“ 3V Hypermarket1”，“ N2”）；（“ 6”，“ 9003563”，“ dfictoeiea1”，“ N2”）；（“ 7”，“ 9003564”，“ ermarket2”， “ N2”）；（“ 8”，“ 9003569”，“ Lorcd2”，“ N2”）；）

如果我在微调器1中选择了路线N2，则第二个微调器应显示与“ N2”匹配的所有路线，结果应为9003562,9003561,9003565,9003563,9003564,9003569。

目前，它仅基于“路线选择”显示一个。

数据库微调器信息：

public Cursor getAllLabelsForSpinner1AsCursor() {
  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 getAllLabelsForSpinner2AsCursor(String keyFromSinner1) {
  String[] columns = new String[] {
    "rowid AS _id, *"
  }; // Need _id column for SimpleCursorAdapter
  return this.getWritableDatabase().query(TABLE_LABELS, columns, DatabaseHandler.ROUTE + " LIKE ?", new String[] {
      keyFromSinner1 + "%"
    },
    null, null, null
  );
}
public Cursor getAllLabelsForSpinner3AsCursor(String keyFromSpinner2) {
  String[] columns = new String[] {
    "rowid AS _id, *"
  }; // Need _id column for SimpleCursorAdapter
  return this.getWritableDatabase().query(
    TABLE_LABELS, columns,
    DatabaseHandler.ROUTE + " LIKE ?",
    new String[] {
      keyFromSpinner2 + "%"
    },
    null, null, null);
}

enter code here

主要活动：

private void manageSpinner1() {
  spinner5csr = dbhndlr.getAllLabelsForSpinner1AsCursor();
  if (sca5 == null) {
    sca5 = new SimpleCursorAdapter(this, android.R.layout.simple_list_item_1,
      spinner5csr,
      new String[] {
        DatabaseHandler.KEY_NAME
      },
      new int[] {
        android.R.id.text1
      },
      0
    );
    s5.setAdapter(sca5);
    s5.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
      @Override
      public void onItemSelected(AdapterView << ? > parent, View view, int position, long id) {
        manageSpinner2(spinner5csr.getString(spinner5csr.getColumnIndex(DatabaseHandler.ROUTE)));

      }


      @Override
      public void onNothingSelected(AdapterView << ? > parent) {}
    });


  } else {
    sca5.swapCursor(spinner5csr);
  }


}

private void manageSpinner2(String keyFromSpinner1) {
  spinner2csr = dbhndlr.getAllLabelsForSpinner2AsCursor(keyFromSpinner1);
  if (sca2 == null) {
    sca2 = new SimpleCursorAdapter(
      this,
      android.R.layout.simple_list_item_1,
      spinner2csr,
      new String[] {
        DatabaseHandler.ROUTE
      },
      new int[] {
        android.R.id.text1
      },
      0
    );



    s1.setAdapter(sca2);
    s1.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
      @Override
      public void onItemSelected(AdapterView << ? > parent, View view, int position, long id) {
        manageSpinner3(spinner2csr.getString(spinner2csr.getColumnIndex(DatabaseHandler.ROUTE)));
      }

      @Override
      public void onNothingSelected(AdapterView << ? > parent) {

      }
    });
  } else {
    sca2.swapCursor(spinner2csr);
  }
}


private void manageSpinner3(String keyForSpinner3) {
  spinner3csr = dbhndlr.getAllLabelsForSpinner3AsCursor(keyForSpinner3);
  if (sca3 == null) {
    sca3 = new SimpleCursorAdapter(
      this,
      android.R.layout.simple_list_item_1,
      spinner3csr,
      new String[] {
        DatabaseHandler.KEY_ID
      },
      new int[] {
        android.R.id.text1
      },
      0
    );
    s2.setAdapter(sca3);
  } else {
    sca3.swapCursor(spinner3csr);
  }
}

从编辑文本动态输入或微调框选择中填充微调框选择

0 个答案: