如何使用自定义布局作为 RadioButton 标签
How to use a custom layout as RadioButton label
我制作了一个要为 RadioButton
实现的自定义布局。
android class 的代码在这里:
public class MyRadioButton extends LinearLayout implements View.OnClickListener{
private ImageView iv;
private TextView tv;
private RadioButton rb;
private View view;
public MyRadioButton(Context context) {
super(context);
view = View.inflate(context, R.layout.my_radio_button, this);
setOrientation(HORIZONTAL);
rb = (RadioButton) view.findViewById(R.id.radioButton1);
tv = (TextView) view.findViewById(R.id.textView1);
iv = (ImageView) view.findViewById(R.id.imageView1);
view.setOnClickListener(this);
rb.setOnCheckedChangeListener(null);
}
public void setImageBitmap(Bitmap bitmap) {
iv.setImageBitmap(bitmap);
}
public View getView() {
return view;
}
@Override
public void onClick(View v) {
boolean nextState = !rb.isChecked();
LinearLayout lGroup = (LinearLayout)view.getParent();
if(lGroup != null){
int child = lGroup.getChildCount();
for(int i=0; i<child; i++){
//uncheck all
((RadioButton)lGroup.getChildAt(i).findViewById(R.id.radioButton1)).setChecked(false);
}
}
rb.setChecked(nextState);
}
public void setImage(Bitmap b){
iv.setImageBitmap(b);
}
public void setText(String text){
tv.setText(text);
}
public void setChecked(boolean isChecked){
rb.setChecked(isChecked);
}
}
布局代码在这里
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center_vertical"
android:orientation="horizontal" >
<RadioButton
android:id="@+id/radioButton1"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:gravity="top"
android:text="" />
<LinearLayout
android:orientation="vertical"
android:layout_width="wrap_content"
android:layout_height="wrap_content">
<TextView
android:id="@+id/textView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Medium Text"
android:textAppearance="?android:attr/textAppearanceMedium" />
<ImageView
android:id="@+id/imageView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="@drawable/wow_visa_prepaid" />
</LinearLayout>
</LinearLayout>
此刻,我不知道如何将继承从 LinearLayout
更改为 RadioButton
并保持相同的布局。
这个应该喜欢但是有圆角
我试过下面的代码,它工作正常,没有错误:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout 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"
android:orientation="horizontal"
tools:context=".MainActivity">
<com.example.myapplication.MyRadioButton
android:layout_width="match_parent"
android:layout_height="wrap_content"/>
</LinearLayout>
更改以下代码后:
public MyRadioButton(Context context) {
到以下代码:
public MyRadioButton(Context context, AttributeSet attributes) {
这是您需要的解决方案吗?
有两种方法可以完成这项工作:
1. 当我们听说自定义视图时,它驱使我们重写 onDraw
方法,然后将我们想要的内容绘制到视图的 Canvas
中。
2. 在这种情况下,有一个更简单的方法,使用drawableLeft
。在这里,我扩展了 AppCompatRadioButton
并将考虑的布局设置为 drawableLeft
.
MyRadioButton.java
package com.aminography.radiobutton;
import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.drawable.BitmapDrawable;
import android.util.AttributeSet;
import android.view.LayoutInflater;
import android.view.View;
import android.widget.ImageView;
import android.widget.TextView;
import com.bumptech.glide.Glide;
import com.bumptech.glide.load.DataSource;
import com.bumptech.glide.load.MultiTransformation;
import com.bumptech.glide.load.engine.GlideException;
import com.bumptech.glide.load.resource.bitmap.CenterCrop;
import com.bumptech.glide.request.RequestListener;
import com.bumptech.glide.request.RequestOptions;
import com.bumptech.glide.request.target.Target;
import jp.wasabeef.glide.transformations.MaskTransformation;
// TODO: If you are using androidx
import androidx.annotation.Nullable;
import androidx.appcompat.widget.AppCompatRadioButton;
// TODO: If you are using appcompat
//import android.support.annotation.Nullable;
//import android.support.v7.widget.AppCompatRadioButton;
public class MyRadioButton extends AppCompatRadioButton {
private View view;
private TextView textView;
private ImageView imageView;
public MyRadioButton(Context context) {
super(context);
init(context);
}
public MyRadioButton(Context context, AttributeSet attrs) {
super(context, attrs);
init(context);
}
public MyRadioButton(Context context, AttributeSet attrs, int defStyleAttr) {
super(context, attrs, defStyleAttr);
init(context);
}
private RequestListener<Bitmap> requestListener = new RequestListener<Bitmap>() {
@Override
public boolean onLoadFailed(@Nullable GlideException e, Object model, Target<Bitmap> target, boolean isFirstResource) {
return false;
}
@Override
public boolean onResourceReady(Bitmap resource, Object model, Target<Bitmap> target, DataSource dataSource, boolean isFirstResource) {
imageView.setImageBitmap(resource);
redrawLayout();
return false;
}
};
public void setImageResource(int resId) {
Glide.with(getContext())
.asBitmap()
.load(resId)
.apply(RequestOptions.bitmapTransform(
new MultiTransformation<>(
new CenterCrop(),
new RoundedCornersTransformation(dp2px(getContext(), 24), 0, RoundedCornersTransformation.CornerType.ALL))
)
)
.listener(requestListener)
.submit();
}
public void setImageBitmap(Bitmap bitmap) {
Glide.with(getContext())
.asBitmap()
.load(bitmap)
.apply(RequestOptions.bitmapTransform(
new MultiTransformation<>(
new CenterCrop(),
new RoundedCornersTransformation(dp2px(getContext(), 24), 0, RoundedCornersTransformation.CornerType.ALL))
)
)
.listener(requestListener)
.submit();
}
// setText is a final method in ancestor, so we must take another name.
public void setTextWith(int resId) {
textView.setText(resId);
redrawLayout();
}
public void setTextWith(CharSequence text) {
textView.setText(text);
redrawLayout();
}
private void init(Context context) {
view = LayoutInflater.from(context).inflate(R.layout.my_radio_button_content, null);
textView = view.findViewById(R.id.textView);
imageView = view.findViewById(R.id.imageView);
redrawLayout();
}
private void redrawLayout() {
view.setDrawingCacheEnabled(true);
view.measure(View.MeasureSpec.UNSPECIFIED, View.MeasureSpec.UNSPECIFIED);
view.layout(0, 0, view.getMeasuredWidth(), view.getMeasuredHeight());
view.buildDrawingCache(true);
Bitmap bitmap = Bitmap.createBitmap(view.getDrawingCache());
setCompoundDrawablesWithIntrinsicBounds(new BitmapDrawable(getResources(), bitmap), null, null, null);
view.setDrawingCacheEnabled(false);
}
private int dp2px(Context context, int dp) {
return (int) (dp * context.getResources().getDisplayMetrics().density);
}
}
my_radio_button_content.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:gravity="center_horizontal"
android:orientation="vertical">
<TextView
android:id="@+id/textView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Medium Text"
android:textAppearance="?android:attr/textAppearanceMedium" />
<ImageView
android:id="@+id/imageView"
android:layout_width="96dp"
android:layout_height="64dp"
android:src="@drawable/img_visa" />
</LinearLayout>
视觉结果:
注:
1. 如果您在项目中使用 appcompat
,请在 class 顶部注释 androidx
导入并取消注释 appcompat
一个。
2. 您只需更改 android:paddingLeft
即可更改自定义布局的位置 RadioButton
:
<com.aminography.radiobutton.MyRadioButton
android:id="@+id/radioButton"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:paddingLeft="8dp" />
已编辑:
我使用 Glide
和 Glide-Transformations
重写了代码以满足圆角图像的要求。
build.gradle
dependencies {
implementation 'com.github.bumptech.glide:glide:4.9.0'
implementation 'jp.wasabeef:glide-transformations:3.3.0'
}
1. 创建 class 时,扩展 LinearLayout 或
FrameLayout, .xml布局文件(my_radio_button_content.xml),
必须以“merge”而不是 "LinearLayout" 开头,否则它
将是 LinearLayot(.xml) 在 LinearLayout( 你的 class).
<merge>
<RadioButton
android:id="@+id/radioButton1"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:gravity="top"
android:text="" />
<LinearLayout
android:orientation="vertical"
android:layout_width="wrap_content"
android:layout_height="wrap_content">
<TextView
android:id="@+id/textView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Medium Text"
android:textAppearance="?android:attr/textAppearanceMedium" />
<ImageView
android:id="@+id/imageView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="@drawable/wow_visa_prepaid" />
</LinearLayout>
</merge>
2.很容易创建:final ArrayList<MyRadioButton>
,传过去
to all children,如果你要兄弟们就各换一个
其他
public MyRadioButton(Context context) {
super(context);
inflate(context, R.layout.my_radio_button, this);
}
public void SetMyViewClickable(final ArrayList<String> brothers) {
setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
for (View brother:brothers) {
((RadioButton)brother.findViewById(R.id.radioButton1)).setChecked(false);
}
}
});
}
有很多方法可以做到这一点,例如,您可以使用以下库
我制作了一个要为 RadioButton
实现的自定义布局。
android class 的代码在这里:
public class MyRadioButton extends LinearLayout implements View.OnClickListener{
private ImageView iv;
private TextView tv;
private RadioButton rb;
private View view;
public MyRadioButton(Context context) {
super(context);
view = View.inflate(context, R.layout.my_radio_button, this);
setOrientation(HORIZONTAL);
rb = (RadioButton) view.findViewById(R.id.radioButton1);
tv = (TextView) view.findViewById(R.id.textView1);
iv = (ImageView) view.findViewById(R.id.imageView1);
view.setOnClickListener(this);
rb.setOnCheckedChangeListener(null);
}
public void setImageBitmap(Bitmap bitmap) {
iv.setImageBitmap(bitmap);
}
public View getView() {
return view;
}
@Override
public void onClick(View v) {
boolean nextState = !rb.isChecked();
LinearLayout lGroup = (LinearLayout)view.getParent();
if(lGroup != null){
int child = lGroup.getChildCount();
for(int i=0; i<child; i++){
//uncheck all
((RadioButton)lGroup.getChildAt(i).findViewById(R.id.radioButton1)).setChecked(false);
}
}
rb.setChecked(nextState);
}
public void setImage(Bitmap b){
iv.setImageBitmap(b);
}
public void setText(String text){
tv.setText(text);
}
public void setChecked(boolean isChecked){
rb.setChecked(isChecked);
}
}
布局代码在这里
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center_vertical"
android:orientation="horizontal" >
<RadioButton
android:id="@+id/radioButton1"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:gravity="top"
android:text="" />
<LinearLayout
android:orientation="vertical"
android:layout_width="wrap_content"
android:layout_height="wrap_content">
<TextView
android:id="@+id/textView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Medium Text"
android:textAppearance="?android:attr/textAppearanceMedium" />
<ImageView
android:id="@+id/imageView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="@drawable/wow_visa_prepaid" />
</LinearLayout>
</LinearLayout>
此刻,我不知道如何将继承从 LinearLayout
更改为 RadioButton
并保持相同的布局。
这个应该喜欢但是有圆角
我试过下面的代码,它工作正常,没有错误:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout 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"
android:orientation="horizontal"
tools:context=".MainActivity">
<com.example.myapplication.MyRadioButton
android:layout_width="match_parent"
android:layout_height="wrap_content"/>
</LinearLayout>
更改以下代码后:
public MyRadioButton(Context context) {
到以下代码:
public MyRadioButton(Context context, AttributeSet attributes) {
这是您需要的解决方案吗?
有两种方法可以完成这项工作:
1. 当我们听说自定义视图时,它驱使我们重写 onDraw
方法,然后将我们想要的内容绘制到视图的 Canvas
中。
2. 在这种情况下,有一个更简单的方法,使用drawableLeft
。在这里,我扩展了 AppCompatRadioButton
并将考虑的布局设置为 drawableLeft
.
MyRadioButton.java
package com.aminography.radiobutton;
import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.drawable.BitmapDrawable;
import android.util.AttributeSet;
import android.view.LayoutInflater;
import android.view.View;
import android.widget.ImageView;
import android.widget.TextView;
import com.bumptech.glide.Glide;
import com.bumptech.glide.load.DataSource;
import com.bumptech.glide.load.MultiTransformation;
import com.bumptech.glide.load.engine.GlideException;
import com.bumptech.glide.load.resource.bitmap.CenterCrop;
import com.bumptech.glide.request.RequestListener;
import com.bumptech.glide.request.RequestOptions;
import com.bumptech.glide.request.target.Target;
import jp.wasabeef.glide.transformations.MaskTransformation;
// TODO: If you are using androidx
import androidx.annotation.Nullable;
import androidx.appcompat.widget.AppCompatRadioButton;
// TODO: If you are using appcompat
//import android.support.annotation.Nullable;
//import android.support.v7.widget.AppCompatRadioButton;
public class MyRadioButton extends AppCompatRadioButton {
private View view;
private TextView textView;
private ImageView imageView;
public MyRadioButton(Context context) {
super(context);
init(context);
}
public MyRadioButton(Context context, AttributeSet attrs) {
super(context, attrs);
init(context);
}
public MyRadioButton(Context context, AttributeSet attrs, int defStyleAttr) {
super(context, attrs, defStyleAttr);
init(context);
}
private RequestListener<Bitmap> requestListener = new RequestListener<Bitmap>() {
@Override
public boolean onLoadFailed(@Nullable GlideException e, Object model, Target<Bitmap> target, boolean isFirstResource) {
return false;
}
@Override
public boolean onResourceReady(Bitmap resource, Object model, Target<Bitmap> target, DataSource dataSource, boolean isFirstResource) {
imageView.setImageBitmap(resource);
redrawLayout();
return false;
}
};
public void setImageResource(int resId) {
Glide.with(getContext())
.asBitmap()
.load(resId)
.apply(RequestOptions.bitmapTransform(
new MultiTransformation<>(
new CenterCrop(),
new RoundedCornersTransformation(dp2px(getContext(), 24), 0, RoundedCornersTransformation.CornerType.ALL))
)
)
.listener(requestListener)
.submit();
}
public void setImageBitmap(Bitmap bitmap) {
Glide.with(getContext())
.asBitmap()
.load(bitmap)
.apply(RequestOptions.bitmapTransform(
new MultiTransformation<>(
new CenterCrop(),
new RoundedCornersTransformation(dp2px(getContext(), 24), 0, RoundedCornersTransformation.CornerType.ALL))
)
)
.listener(requestListener)
.submit();
}
// setText is a final method in ancestor, so we must take another name.
public void setTextWith(int resId) {
textView.setText(resId);
redrawLayout();
}
public void setTextWith(CharSequence text) {
textView.setText(text);
redrawLayout();
}
private void init(Context context) {
view = LayoutInflater.from(context).inflate(R.layout.my_radio_button_content, null);
textView = view.findViewById(R.id.textView);
imageView = view.findViewById(R.id.imageView);
redrawLayout();
}
private void redrawLayout() {
view.setDrawingCacheEnabled(true);
view.measure(View.MeasureSpec.UNSPECIFIED, View.MeasureSpec.UNSPECIFIED);
view.layout(0, 0, view.getMeasuredWidth(), view.getMeasuredHeight());
view.buildDrawingCache(true);
Bitmap bitmap = Bitmap.createBitmap(view.getDrawingCache());
setCompoundDrawablesWithIntrinsicBounds(new BitmapDrawable(getResources(), bitmap), null, null, null);
view.setDrawingCacheEnabled(false);
}
private int dp2px(Context context, int dp) {
return (int) (dp * context.getResources().getDisplayMetrics().density);
}
}
my_radio_button_content.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:gravity="center_horizontal"
android:orientation="vertical">
<TextView
android:id="@+id/textView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Medium Text"
android:textAppearance="?android:attr/textAppearanceMedium" />
<ImageView
android:id="@+id/imageView"
android:layout_width="96dp"
android:layout_height="64dp"
android:src="@drawable/img_visa" />
</LinearLayout>
视觉结果:
注:
1. 如果您在项目中使用 appcompat
,请在 class 顶部注释 androidx
导入并取消注释 appcompat
一个。
2. 您只需更改 android:paddingLeft
即可更改自定义布局的位置 RadioButton
:
<com.aminography.radiobutton.MyRadioButton
android:id="@+id/radioButton"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:paddingLeft="8dp" />
已编辑:
我使用 Glide
和 Glide-Transformations
重写了代码以满足圆角图像的要求。
build.gradle
dependencies {
implementation 'com.github.bumptech.glide:glide:4.9.0'
implementation 'jp.wasabeef:glide-transformations:3.3.0'
}
1. 创建 class 时,扩展 LinearLayout 或 FrameLayout, .xml布局文件(my_radio_button_content.xml), 必须以“merge”而不是 "LinearLayout" 开头,否则它 将是 LinearLayot(.xml) 在 LinearLayout( 你的 class).
<merge>
<RadioButton
android:id="@+id/radioButton1"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:gravity="top"
android:text="" />
<LinearLayout
android:orientation="vertical"
android:layout_width="wrap_content"
android:layout_height="wrap_content">
<TextView
android:id="@+id/textView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Medium Text"
android:textAppearance="?android:attr/textAppearanceMedium" />
<ImageView
android:id="@+id/imageView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="@drawable/wow_visa_prepaid" />
</LinearLayout>
</merge>
2.很容易创建:final ArrayList<MyRadioButton>
,传过去
to all children,如果你要兄弟们就各换一个
其他
public MyRadioButton(Context context) {
super(context);
inflate(context, R.layout.my_radio_button, this);
}
public void SetMyViewClickable(final ArrayList<String> brothers) {
setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
for (View brother:brothers) {
((RadioButton)brother.findViewById(R.id.radioButton1)).setChecked(false);
}
}
});
}
有很多方法可以做到这一点,例如,您可以使用以下库