Android自定义控件使用declare-styleable进行属性配置

来源：互联网发布：数据分析是做什么的编辑：程序博客网时间：2024/05/21 05:08

1、在res/vlaues文件夹下创建资源文件attrs.xml

<?xml version="1.0" encoding="utf-8"?><resources>    <declare-styleable name="poster">        <attr name="icon" format="reference" />        <attr name="iconW" format="dimension" />        <attr name="iconH" format="dimension" />        <attr name="text" format="reference|string" />        <attr name="textColor" format="color" />        <attr name="textSize" format="dimension" />        <attr name="background" format="reference" />    </declare-styleable>    <declare-styleable name="settingItem">        <attr name="name" format="reference|string" />        <attr name="value" format="reference|string" />    </declare-styleable></resources>

a. reference：参考某一资源ID，以此类推

（1）属性定义：

<declare-styleable name = "名称"><attr name = "background" format = "reference" /></declare-styleable>

（2）属性使用：

<ImageViewandroid:layout_width = "42dip"android:layout_height = "42dip"android:background = "@drawable/图片ID"/>

b. color：颜色值

<declare-styleable name = "名称"><attr name = "textColor" format = "color" /></declare-styleable>

c. boolean：布尔值

<declare-styleable name = "名称"><attr name = "focusable" format = "boolean" /></declare-styleable>

d. dimension：尺寸值（注意：这里如果是dp那就会做像素转换）

<declare-styleable name = "名称"><attr name = "layout_width" format = "dimension" /></declare-styleable>

e. float：浮点值

f. integer：整型值

g. string：字符串

h. fraction：百分数

i. enum：枚举值

j. flag：是自己定义的,类似于 android:gravity="top"，就是里面对应了自己的属性值

k. reference|color：颜色的资源文件

l.reference|boolean：布尔值的资源文件

注意：//由于reference是从资源文件中获取,所以在XML文件中写这个属性的时候必须使用personattr:name="@string/app_name"这种格式，否则会出错。

2.设置好属性文件后，在使用的布局中写相关配置

xmlns:myapp="http://schemas.android.com/apk/res/com.starview.tv"

<com.starview.tv.view.PosterView            android:id="@+id/myview1"            android:layout_width="290dp"            android:layout_height="@dimen/settingpage_big_height"            android:background="@drawable/hello_selection"            myapp:background="@drawable/mainmenu_colorboard_blue"            myapp:icon="@drawable/icons_01catbox_dtv"            myapp:iconH="110dp"            myapp:iconW="110dp"            myapp:text="@string/str_dtv"            myapp:textColor="@color/white"            myapp:textSize="@dimen/indexsecondpagefontsize" />

3.最后在自定义控件的构造方法中获取你配置的属性值

package com.starview.tv.view;import com.starview.tv.R;import android.content.Context;import android.content.res.TypedArray;import android.graphics.Color;import android.graphics.drawable.Drawable;import android.util.AttributeSet;import android.view.LayoutInflater;import android.view.View;import android.view.ViewGroup;import android.widget.FrameLayout;import android.widget.ImageView;import android.widget.TextView;public class PosterView extends FrameLayout{     private ImageView mPosterIconImageV;     private TextView mPosterTextV;     private View mPosterBackground;     public PosterView(Context context)     {          this(context, null);     }     public PosterView(Context context, AttributeSet attrs)     {          this(context, attrs, 0);     }     public PosterView(Context context, AttributeSet attrs, int defStyle)     {          super(context, attrs, defStyle);          initView();          TypedArray a = context.obtainStyledAttributes(attrs, R.styleable.poster);          if (mPosterTextV != null)          {               String text = a.getString(R.styleable.poster_text);               if (text != null)                    mPosterTextV.setText(text);               int color = a.getColor(R.styleable.poster_textColor, Color.WHITE);               mPosterTextV.setTextColor(color);               float size = a.getDimensionPixelOffset(R.styleable.poster_textSize, 24);               mPosterTextV.setTextSize(size);          }                   if (mPosterIconImageV != null)          {               Drawable d = a.getDrawable(R.styleable.poster_icon);               if(d != null)                    mPosterIconImageV.setImageDrawable(d);               int width = a.getDimensionPixelOffset(R.styleable.poster_iconW, 100);               int height = a.getDimensionPixelOffset(R.styleable.poster_iconH, 100);               ViewGroup.LayoutParams lp = mPosterIconImageV.getLayoutParams();               lp.width = width;               lp.height = height;               mPosterIconImageV.setLayoutParams(lp);          }                   if(mPosterBackground != null)          {               Drawable d = a.getDrawable(R.styleable.poster_background);               if(d != null)                    mPosterBackground.setBackgroundDrawable(d);          }          a.recycle();     }     private void initView()     {          LayoutInflater.from(getContext()).inflate(R.layout.poster_view_layout, this, true);          mPosterBackground = findViewById(R.id.poster);          mPosterIconImageV = (ImageView) findViewById(R.id.imageView1);          mPosterTextV = (TextView) findViewById(R.id.textView1);     }         public void setImageDrawable(Drawable d)     {          if(mPosterIconImageV != null)          {               mPosterIconImageV.setImageDrawable(d);          }     }         public void setImageDrawable(int resId)     {          if(mPosterIconImageV != null)          {               mPosterIconImageV.setImageResource(resId);          }     }         public void setText(CharSequence text)     {          if(mPosterTextV != null)          {               mPosterTextV.setText(text);          }     }         public void setText(int resId)     {          if(mPosterTextV != null)          {               mPosterTextV.setText(resId);          }     }         public ImageView getIconImageView()     {          return mPosterIconImageV;     }         public TextView getTextView()     {          return mPosterTextV;     }         public void setTextVisibility(int visibility)     {          if(mPosterTextV != null)          {               mPosterTextV.setVisibility(visibility);          }     }         public void setIconVisibility(int visibility)     {          if(mPosterIconImageV != null)          {               mPosterIconImageV.setVisibility(visibility);          }     }         public void setPosterBackground(Drawable d)     {          if(mPosterBackground != null)          {               mPosterBackground.setBackgroundDrawable(d);          }     }         public void setPosterBackground(int resId)     {          if(mPosterBackground != null)          {               mPosterBackground.setBackgroundResource(resId);          }     }}

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