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廢話不多說了,直接給大家貼代碼了,具體代碼如下所示:
import android.content.Context; import android.graphics.ColorMatrixColorFilter; import android.util.AttributeSet; import android.view.MotionEvent; import android.view.View; import android.widget.ImageView; public class MyImageView extends ImageView{ public MyImageView(Context context, AttributeSet attrs) { super(context, attrs); // TODO Auto-generated constructor stub this.setOnTouchListener(VIEW_TOUCH_DARK); } public static final OnTouchListener VIEW_TOUCH_DARK = new OnTouchListener() { //變暗(三個(gè)-50,值越大則效果越深) public final float[] BT_SELECTED_DARK = new float[] { 1, 0, 0, 0, -50, 0, 1, 0, 0, -50, 0, 0, 1, 0, -50, 0, 0, 0, 1, 0 }; /* //變亮 public final float[] BT_SELECTED_LIGHT = new float[] { 1, 0, 0, 0, 50, 0, 1, 0, 0, 50, 0, 0, 1, 0, 50, 0, 0, 0, 1, 0 }; //恢復(fù) public final float[] BT_NOT_SELECTED = new float[] { 1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0 }; */ @Override public boolean onTouch(View v, MotionEvent event) { if (event.getAction() == MotionEvent.ACTION_DOWN) { ImageView iv = (ImageView) v; iv.setColorFilter(new ColorMatrixColorFilter(BT_SELECTED_DARK)); } else if (event.getAction() == MotionEvent.ACTION_UP) { ImageView iv = (ImageView) v; iv.clearColorFilter(); } return false; //如為false,執(zhí)行ACTION_DOWN后不再往下執(zhí)行 } }; }
以上所述是小編給大家介紹的ImageView點(diǎn)擊可變暗的實(shí)例代碼(android代碼技巧),希望對(duì)大家有所幫助,如果大家有任何疑問請(qǐng)給我留言,小編會(huì)及時(shí)回復(fù)大家的。在此也非常感謝大家對(duì)億速云網(wǎng)站的支持!
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