- 如果您只支持HoneyComb及其以上版本,那将很容易。创建一个StateListDrawable并将其设置为列表视图项目的背景。
selector.xml
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item android:state_activated="true" android:drawable="@drawable/item_focus" />
<item android:drawable="@android:color/transparent" />
</selector>
列表视图项目的布局
<ImageView
android:id="@+id/image"
android:layout_width="100dp"
android:layout_height="100dp"
android:padding="5dp" />
最后,设置你的列表视图中选择模式SINGLE
list.setChoiceMode(ListView.CHOICE_MODE_SINGLE);
2.如果你能支持蜂窝前,你必须写自己的布局实现可检验的。你这样做是为了锻炼使用检查状态。以LinearLayout为例,您可以对其他人做同样的事情。
package com.example.listviewactivestate;
import android.content.Context;
import android.util.AttributeSet;
import android.view.View;
import android.widget.Checkable;
import android.widget.LinearLayout;
public class CustomLinearLayout extends LinearLayout implements Checkable {
private static final int[] CHECKED_STATE_SET = { android.R.attr.state_checked };
private boolean checked = false;
public CustomLinearLayout (Context context, AttributeSet attrs) {
super(context, attrs);
}
public CustomLinearLayout (Context context) {
super(context);
}
@Override
public boolean isChecked() {
return checked;
}
@Override
public void setChecked(boolean checked) {
this.checked = checked;
refreshDrawableState();
// Propagate to childs
final int count = getChildCount();
for (int i = 0; i < count; i++) {
final View child = getChildAt(i);
if (child instanceof Checkable) {
((Checkable) child).setChecked(checked);
}
}
}
@Override
protected int[] onCreateDrawableState(int extraSpace) {
final int[] drawableState = super.onCreateDrawableState(extraSpace + 1);
if (isChecked()) {
mergeDrawableStates(drawableState, CHECKED_STATE_SET);
}
return drawableState;
}
@Override
public void toggle() {
this.checked = !this.checked;
}
}
在使用XML
<?xml version="1.0" encoding="utf-8"?>
<com.example.listviewactivestate.CustomLinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:background="@drawable/selector"
>
<ImageView
android:id="@+id/image"
android:layout_width="100dp"
android:layout_height="100dp"
android:padding="5dp" />
</com.example.listviewactivestate.CustomLinearLayout >
变化state_activated
这个自定义视图state_checked
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item android:state_checked="true" android:drawable="@drawable/item_focus" />
<item android:drawable="@android:color/transparent" />
</selector>
还设置列表视图选择模式SINGLE
。如果不起作用,请添加onItemClickEvent
这样的
list.setOnItemClickListener(new OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
// TODO Auto-generated method stub
list.setItemChecked(position, true);//make sure click item is set to checked.
}
});
请添加一些代码或图片。对我来说很难理解。 –
@Yul看到这个http://pastebin.com/3eeZ38dN – Harshid