Question

我想知道是否可以使NumberPicker中的文本可单击并在单击白色区域或文本区域时表现相同。我尝试做这样的事情的原因是，当我在栏中有一个长字符串时，选择该区域变得非常困难。到目前为止我附上了我的代码。

MainActivity.java

package com.yardimobileinterns.numberpicker;

import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.widget.EditText;

public class MainActivity extends AppCompatActivity {

    private EditText editText;
    private String[] values = {"University1", "University2", "University3"};

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        editText = (EditText) findViewById(R.id.editText);

        editText.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                editText.setMovementMethod(null);
                editText.setSelection(editText.getText().length());

                showDialog(editText, values);
            }
        });

    }

    public void showDialog(EditText editText, String[] values) {
        EditTextDialogFragment editTextDialogFragment = EditTextDialogFragment.getNewInstance(editText,values);
        editTextDialogFragment.show(getFragmentManager(), "dialog");
    }

}

EditTextDialogFragment.java

package com.yardimobileinterns.numberpicker;

import android.app.DialogFragment;
import android.os.Bundle;
import android.view.Gravity;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.EditText;
import android.widget.NumberPicker;


public class EditTextDialogFragment extends DialogFragment {

    public static final String EDIT_TEXT = "EDIT_TEXT";
    public static final String VALUES = "VALUES";


    private String[] mValues;
    private NumberPicker numberPicker;
    private EditText mEditText;
    private String selectedValue;


    public EditTextDialogFragment() {

    }

    public static EditTextDialogFragment getNewInstance(EditText editText, String[] values) {
        EditTextDialogFragment editTextDialogFragment = new EditTextDialogFragment();

        Bundle bundle = new Bundle();

        bundle.putStringArray(VALUES, values);
        editTextDialogFragment.setEditText(editText);
        editTextDialogFragment.setArguments(bundle);

        return editTextDialogFragment;
    }

    public void setEditText(EditText editText) {
        mEditText = editText;
    }

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setRetainInstance(true);

        mValues = getArguments().getStringArray(VALUES);
    }

    @Override
    public View onCreateView(LayoutInflater layoutInflater, ViewGroup viewGroup, Bundle savedInstanceState) {

        View view = layoutInflater.inflate(R.layout.university_picker, viewGroup, false);

        getDialog().getWindow().setGravity(Gravity.FILL_HORIZONTAL | Gravity.BOTTOM);

        numberPicker = (NumberPicker) view.findViewById(R.id.numberPicker);

        numberPicker.setMinValue(0);

        selectedValue = (mValues.length == 0) ? "" : mValues[0];

        numberPicker.setMaxValue(mValues.length - 1);

        numberPicker.setDisplayedValues(mValues);

        numberPicker.setWrapSelectorWheel(false);

        numberPicker.setClickable(true);

        numberPicker.setOnValueChangedListener(new NumberPicker.OnValueChangeListener() {
            @Override
            public void onValueChange(NumberPicker picker, int oldVal, int newVal) {
                selectedValue = mValues[newVal];
            }
        });

        numberPicker.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                getDialog().dismiss();
                mEditText.setText(selectedValue);
            }
        });


        return view;
    }

}

university_picker.xml

    <?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context="com.yardimobileinterns.numberpicker.MainActivity"
    android:background="#ffffff">

    <NumberPicker
        android:id="@+id/numberPicker"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:descendantFocusability="blocksDescendants"
        >

    </NumberPicker>

</RelativeLayout>

以下是它的外观：谢谢！

Answer 1

我找到的实际解决方案是使用onTouch模拟onClick，以便允许单击文本。它现在运作良好。

package com.yardimobileinterns.numberpicker;

import android.app.DialogFragment;
import android.os.Bundle;
import android.view.Gravity;
import android.view.LayoutInflater;
import android.view.MotionEvent;
import android.view.View;
import android.view.ViewGroup;
import android.widget.EditText;
import android.widget.NumberPicker;


public class EditTextDialogFragment extends DialogFragment {

    public static final String EDIT_TEXT = "EDIT_TEXT";
    public static final String VALUES = "VALUES";


    private String[] mValues;
    private NumberPicker numberPicker;
    private EditText mEditText;
    private String selectedValue;

    private int lastAction = -1;

    public EditTextDialogFragment() {

    }

    public static EditTextDialogFragment getNewInstance(EditText editText, String[] values) {
        EditTextDialogFragment editTextDialogFragment = new EditTextDialogFragment();

        editTextDialogFragment.setValues(values);
        editTextDialogFragment.setEditText(editText);

        return editTextDialogFragment;
    }

    public void setEditText(EditText editText) {
        mEditText = editText;
    }

    public void setValues(String[] values) {
        mValues = values;
    }

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setRetainInstance(true);
    }

    @Override
    public View onCreateView(LayoutInflater layoutInflater, ViewGroup viewGroup, Bundle savedInstanceState) {

        View view = layoutInflater.inflate(R.layout.university_picker, viewGroup, false);

        getDialog().getWindow().setGravity(Gravity.FILL_HORIZONTAL | Gravity.BOTTOM);

        numberPicker = (NumberPicker) view.findViewById(R.id.numberPicker);

        numberPicker.setMinValue(0);

        selectedValue = (mValues.length == 0) ? "" : mValues[mValues.length / 2];

        numberPicker.setMaxValue(mValues.length - 1);

        numberPicker.setDisplayedValues(mValues);

        numberPicker.setValue(mValues.length / 2);

        numberPicker.setWrapSelectorWheel(false);

        numberPicker.setClickable(true);

        numberPicker.setOnValueChangedListener(new NumberPicker.OnValueChangeListener() {
            @Override
            public void onValueChange(NumberPicker picker, int oldVal, int newVal) {
                selectedValue = mValues[newVal];
            }
        });


        numberPicker.setOnTouchListener(new View.OnTouchListener() {
            @Override
            public boolean onTouch(View v, MotionEvent event) {
                boolean solution = false;

                switch (event.getAction()) {
                    case (MotionEvent.ACTION_DOWN):
                        lastAction = MotionEvent.ACTION_DOWN;
                        solution = false;
                        break;
                    case (MotionEvent.ACTION_UP):
                        if (lastAction == MotionEvent.ACTION_DOWN) {
                            solution = true;
                        }
                        lastAction = MotionEvent.ACTION_UP;
                        break;
                    case (MotionEvent.ACTION_SCROLL):
                        lastAction = MotionEvent.ACTION_SCROLL;
                        solution = false;
                        break;
                    default:
                        lastAction = -1;
                        solution = false;
                        break;
                }

                if (solution) {
                    getDialog().dismiss();
                    mEditText.setText(selectedValue);
                }

                return solution;
            }
        });

        return view;
    }
}

如何使NumberPicker中的文本可单击

1 个答案: