首页 > 代码库 > Android动态布局,并动态为TextView控件设置drawableLeft、drawableRight等属性添加图标
Android动态布局,并动态为TextView控件设置drawableLeft、drawableRight等属性添加图标
注:(图中每一个条目和图标都是由代码动态生成)
代码动态布局,并需要为每一个条目设置图标,此时用到了 android:drawableLeft="@drawable/icon"
父xml文件:
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- <?xml version="1.0" encoding="utf-8"?>
- <ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
- android:layout_width="match_parent"
- android:layout_height="match_parent"
- android:background="@color/background" >
- <!-- 子布局由代码动态生成 -->
- <LinearLayout
- android:id="@+id/layout_CONTENT"
- android:layout_width="match_parent"
- android:layout_height="match_parent"
- android:padding="@dimen/content_padding" >
- <LinearLayout
- android:id="@+id/activity_service_select"
- android:layout_width="match_parent"
- android:layout_height="wrap_content"
- android:layout_margin="@dimen/table_margin"
- android:background="@color/table_background"
- android:orientation="vertical"
- android:padding="@dimen/table_padding" >
- </LinearLayout>
- </LinearLayout>
- </ScrollView>
子xml文件:
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- <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
- android:layout_width="match_parent"
- android:layout_height="@dimen/row_height"
- android:layout_marginBottom="@dimen/row_margin"
- android:background="@drawable/row_selector"
- android:paddingLeft="@dimen/row_padding_left"
- android:paddingRight="@dimen/row_padding_right" >
- <TextView
- android:id="@+id/tv_select_item"
- style="@style/text_18"
- android:layout_width="match_parent"
- android:layout_height="@dimen/row_height"
- android:layout_marginBottom="@dimen/row_margin"
- android:background="@drawable/row_selector"
- android:gravity="center_vertical"
- android:textColor="@drawable/row_text_selector" />
- <ImageView
- android:id="@+id/iv_icon"
- android:layout_width="wrap_content"
- android:layout_height="match_parent"
- android:layout_alignParentRight="true"
- android:duplicateParentState="true"
- android:gravity="center_vertical"
- android:src="@drawable/go" />
- </RelativeLayout>
代码中引用:
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- private ViewGroup mLayout;
- private int img[] = {R.drawable.zikao1,R.drawable.zikao2,R.drawable.zikao3,R.drawable.zikao4};
- /* (non-Javadoc)
- * @see app.ui.TitleActivity#onCreate(android.os.Bundle)
- */
- @Override
- protected void onCreate(Bundle savedInstanceState) {
- super.onCreate(savedInstanceState);
- setUpViews();
- }
- private void setUpViews()
- {
- setContentView(R.layout.activity_service_select);
- setTitle(R.string.text_select);
- showBackwardView(R.string.button_backward, true);
- mLayout = (ViewGroup)findViewById(R.id.activity_service_select);
- final String [] mSelfSelect = getResources().getStringArray(R.array.text_self_select);
- // 需要布局的行数
- final int rowCount = mSelfSelect.length;
- for (int i = 0; i < rowCount; i++) {
- final LinearLayout linearLayout = new LinearLayout(this);
- View.inflate(this, R.layout.service_examvaluable_item, linearLayout);
- final View view = linearLayout.getChildAt(0);
- view.setTag(i+1);
- view.setOnClickListener(this);
- Drawable drawable= getResources().getDrawable(img[i]);
- drawable.setBounds(0, 0, drawable.getMinimumWidth(), drawable.getMinimumHeight());
- final TextView mTextView = (TextView) linearLayout.findViewById(R.id.tv_select_item);
- mTextView.setCompoundDrawables(drawable,null,null,null);//设置TextView的drawableleft
- mTextView.setCompoundDrawablePadding(10);//设置图片和text之间的间距
- mTextView.setText(mSelfSelect[i]);
- // 添加到屏幕布局
- LayoutParams layoutParams = new LinearLayout.LayoutParams(LayoutParams.MATCH_PARENT,LayoutParams.MATCH_PARENT);
- mLayout.addView(linearLayout, layoutParams);
- }
- }
在程序中直接取出子xml中TextView中的id,并动态设置改变了 DrawableLeft。
解决方案:
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- public void setCompoundDrawables (Drawable left, Drawable top, Drawable right, Drawable bottom);
类似调用方法如下:
1.在XML中使用
[java] view plaincopy
- android:drawableLeft="@drawable/icon"
2.代码中动态变化
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- Drawable drawable= getResources().getDrawable(R.drawable.drawable);
- drawable.setBounds(0, 0, drawable.getMinimumWidth(), drawable.getMinimumHeight());
- myTextview.setCompoundDrawables(drawable,null,null,null);
参考另一个函数:
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- public void setCompoundDrawablesWithIntrinsicBounds (Drawable left,
- Drawable top, Drawable right, Drawable bottom)
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