android

Android Spinner 禁用選項 (Disable item)

找了很久都找不到要怎麼禁用Spinner裡面的item，

只好自己寫一個Adapter，獻醜了。

SpinnerArrayAdapter.java
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import android.content.Context;
import android.graphics.Color;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.TextView;

public class SpinnerArrayAdapter extends ArrayAdapter<String>{
	
	private int[] ItemPositionIsDisable;
	
	public SpinnerArrayAdapter(Context context, int textViewResourceId) {
		super(context, textViewResourceId);
	}
	
	public SpinnerArrayAdapter(Context context, int textViewResourceId, String[] objects) {
		super(context, textViewResourceId,objects);
		ItemPositionIsDisable = new int[objects.length];
    }
	
	public SpinnerArrayAdapter(Context context,String[] objects){
		this(context, android.R.layout.simple_spinner_item,objects);
		this.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
	}

	public SpinnerArrayAdapter(int stringArrayResourceId,Context context){
		this(context, context.getResources().getStringArray(stringArrayResourceId));
	}
	
	public boolean isEnabled(int position) {
		if (ItemPositionIsDisable[position]==1)
			return false;
		return true;
	}
	
	public void setItemPositionIsDisable(int position,boolean IsDisable) {

		ItemPositionIsDisable[position] = (IsDisable) ? 1 : 0;
	}
	
	@Override
	public View getDropDownView(int position, View convertView, ViewGroup parent) {

		View mView = super.getDropDownView(position, convertView, parent);
		TextView mTextView = (TextView) mView;

		if (ItemPositionIsDisable[position] == 1) {

			mTextView.setTextColor(Color.GRAY);

		} else if (ItemPositionIsDisable[position] == 0) {
			mTextView.setTextColor(Color.BLACK);
		}
		return mView;
		
	}
}

用法也很簡單，

使用setItemPositionIsDisable(int position,boolean IsDisable)來設定就好，

並且支持直接使用R.array中的Resource，以下是用法範例。

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SpinnerArrayAdapter mSpinnerArrayAdapter = new SpinnerArrayAdapter(R.array.level_array,this);
mSpinnerArrayAdapter.setItemPositionIsDisable(1,true);
mSpinnerArrayAdapter.setItemPositionIsDisable(2,true);
mSpinnerArrayAdapter.setItemPositionIsDisable(3,true);
mSpinner.setAdapter(mSpinnerArrayAdapter);

提供大家參考！