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Radio button in list view

I show the sting list in the form view list, I used the default list view and placed the switch using simple_list_item_single_choice . But it showed the Radio button on the right side, I want to display the radio button on the left. is that anyone possible to show the radio button on the left side using the default list view

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simple_list_item_single_choice.xml use the CheckedTextView class

Here is simple_list_item_single_choice.xml

  <CheckedTextView xmlns:android="http://schemas.android.com/apk/res/android" android:id="@android:id/text1" android:layout_width="match_parent" android:layout_height="?android:attr/listPreferredItemHeight" android:textAppearance="?android:attr/textAppearanceLarge" android:gravity="center_vertical" android:checkMark="?android:attr/listChoiceIndicatorSingle" android:paddingLeft="6dip" android:paddingRight="6dip" />

You need to create your own xml for your needs and use CheckBox to achieve your goal. Here is your custom.xml

  <CheckBox xmlns:android="http://schemas.android.com/apk/res/android" android:id="@android:id/text1" android:layout_width="fill_parent" android:layout_height="?android:attr/listPreferredItemHeight" android:textAppearance="?android:attr/textAppearanceLarge" android:gravity="center_vertical" android:button="?android:attr/listChoiceIndicatorSingle" android:paddingLeft="6dip" android:paddingRight="6dip" />

Just use custom.xml instead of simple_list_item_single_choice.xml in your code.

Hope this helps you.

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This is not possible, by default the switch is on the right. If you want it on the left, you must grab the sources for the simple_list_item_single_choice.xml layout from the SDK and make the appropriate changes, then use this custom layout instead of the standard one.

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simple_list_item_single_choice use the CheckedTextView class.

 <?xml version="1.0" encoding="utf-8"?> <!-- Copyright (C) 2008 The Android Open Source Project Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0 Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License. --> <CheckedTextView xmlns:android="http://schemas.android.com/apk/res/android" android:id="@android:id/text1" android:layout_width="match_parent" android:layout_height="?android:attr/listPreferredItemHeight" android:textAppearance="?android:attr/textAppearanceLarge" android:gravity="center_vertical" android:checkMark="?android:attr/listChoiceIndicatorSingle" android:paddingLeft="6dip" android:paddingRight="6dip" />

The CheckedTextView class is an android.widget package.

The source of this class is below.

/ *

  * Copyright (C) 2007 The Android Open Source Project * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package android.widget; import com.android.internal.R; import android.content.Context; import android.content.res.TypedArray; import android.graphics.Canvas; import android.graphics.drawable.Drawable; import android.util.AttributeSet; import android.view.Gravity; import android.view.ViewDebug; import android.view.accessibility.AccessibilityEvent; /** * An extension to TextView that supports the {@link android.widget.Checkable} interface. * This is useful when used in a {@link android.widget.ListView ListView} where the it * {@link android.widget.ListView#setChoiceMode(int) setChoiceMode} has been set to * something other than {@link android.widget.ListView#CHOICE_MODE_NONE CHOICE_MODE_NONE}. * */ public class CheckedTextView extends TextView implements Checkable { private boolean mChecked; private int mCheckMarkResource; private Drawable mCheckMarkDrawable; private int mBasePaddingRight; private int mCheckMarkWidth; private static final int[] CHECKED_STATE_SET = { R.attr.state_checked }; public CheckedTextView(Context context) { this(context, null); } public CheckedTextView(Context context, AttributeSet attrs) { this(context, attrs, 0); } public CheckedTextView(Context context, AttributeSet attrs, int defStyle) { super(context, attrs, defStyle); TypedArray a = context.obtainStyledAttributes(attrs, R.styleable.CheckedTextView, defStyle, 0); Drawable d = a.getDrawable(R.styleable.CheckedTextView_checkMark); if (d != null) { setCheckMarkDrawable(d); } boolean checked = a.getBoolean(R.styleable.CheckedTextView_checked, false); setChecked(checked); a.recycle(); } public void toggle() { setChecked(!mChecked); } @ViewDebug.ExportedProperty public boolean isChecked() { return mChecked; } /** * <p>Changes the checked state of this text view.</p> * * @param checked true to check the text, false to uncheck it */ public void setChecked(boolean checked) { if (mChecked != checked) { mChecked = checked; refreshDrawableState(); } } /** * Set the checkmark to a given Drawable, identified by its resourece id. This will be drawn * when {@link #isChecked()} is true. * * @param resid The Drawable to use for the checkmark. */ public void setCheckMarkDrawable(int resid) { if (resid != 0 && resid == mCheckMarkResource) { return; } mCheckMarkResource = resid; Drawable d = null; if (mCheckMarkResource != 0) { d = getResources().getDrawable(mCheckMarkResource); } setCheckMarkDrawable(d); } /** * Set the checkmark to a given Drawable. This will be drawn when {@link #isChecked()} is true. * * @param d The Drawable to use for the checkmark. */ public void setCheckMarkDrawable(Drawable d) { if (mCheckMarkDrawable != null) { mCheckMarkDrawable.setCallback(null); unscheduleDrawable(mCheckMarkDrawable); } if (d != null) { d.setCallback(this); d.setVisible(getVisibility() == VISIBLE, false); d.setState(CHECKED_STATE_SET); setMinHeight(d.getIntrinsicHeight()); mCheckMarkWidth = d.getIntrinsicWidth(); mPaddingRight = mCheckMarkWidth + mBasePaddingRight; d.setState(getDrawableState()); } else { mPaddingRight = mBasePaddingRight; } mCheckMarkDrawable = d; requestLayout(); } @Override public void setPadding(int left, int top, int right, int bottom) { super.setPadding(left, top, right, bottom); mBasePaddingRight = mPaddingRight; } @Override protected void onDraw(Canvas canvas) { super.onDraw(canvas); final Drawable checkMarkDrawable = mCheckMarkDrawable; if (checkMarkDrawable != null) { final int verticalGravity = getGravity() & Gravity.VERTICAL_GRAVITY_MASK; final int height = checkMarkDrawable.getIntrinsicHeight(); int y = 0; switch (verticalGravity) { case Gravity.BOTTOM: y = getHeight() - height; break; case Gravity.CENTER_VERTICAL: y = (getHeight() - height) / 2; break; } int right = getWidth(); checkMarkDrawable.setBounds( right - mCheckMarkWidth - mBasePaddingRight, y, right - mBasePaddingRight, y + height); checkMarkDrawable.draw(canvas); } } @Override protected int[] onCreateDrawableState(int extraSpace) { final int[] drawableState = super.onCreateDrawableState(extraSpace + 1); if (isChecked()) { mergeDrawableStates(drawableState, CHECKED_STATE_SET); } return drawableState; } @Override protected void drawableStateChanged() { super.drawableStateChanged(); if (mCheckMarkDrawable != null) { int[] myDrawableState = getDrawableState(); // Set the state of the Drawable mCheckMarkDrawable.setState(myDrawableState); invalidate(); } } @Override public boolean dispatchPopulateAccessibilityEvent(AccessibilityEvent event) { boolean populated = super.dispatchPopulateAccessibilityEvent(event); if (!populated) { event.setChecked(mChecked); } return populated; } }

You are modifying onDraw. and simple_list_item_single_choice.xml.

ex.

 <**your class(modifyed CheckedTextView)** xmlns:android="http://schemas.android.com/apk/res/android" android:id="@android:id/text1" android:layout_width="match_parent" android:layout_height="?android:attr/listPreferredItemHeight" android:textAppearance="?android:attr/textAppearanceLarge" android:gravity="center_vertical" android:checkMark="?android:attr/listChoiceIndicatorSingle" android:paddingLeft="6dip" android:paddingRight="6dip" />
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Source: https://habr.com/ru/post/886604/

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