這篇文章給大家介紹怎么在Android中自定義view實(shí)現(xiàn)抖音點(diǎn)贊效果,內(nèi)容非常詳細(xì),感興趣的小伙伴們可以參考借鑒,希望對(duì)大家能有所幫助。

public class Love extends RelativeLayout {
private Context mContext;
float[] num = {-30, -20, 0, 20, 30};//隨機(jī)心形圖片角度
public Love(Context context) {
super(context);
initView(context);
}
public Love(Context context, @Nullable AttributeSet attrs) {
super(context, attrs);
initView(context);
}
public Love(Context context, @Nullable AttributeSet attrs, int defStyleAttr) {
super(context, attrs, defStyleAttr);
initView(context);
}
private void initView(Context context) {
mContext = context;
}
@Override
protected void dispatchDraw(Canvas canvas) {
super.dispatchDraw(canvas);
ImageView imageView = new ImageView(mContext);
LayoutParams params = new LayoutParams(100, 100);
params.leftMargin = getWidth() - 200;
params.topMargin = getHeight() / 2 - 300;
imageView.setImageDrawable(getResources().getDrawable(R.drawable.heart_red));
imageView.setLayoutParams(params);
addView(imageView);
imageView.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
Toast.makeText(mContext, "這里是點(diǎn)擊愛(ài)心的動(dòng)畫(huà),待展示", Toast.LENGTH_SHORT).show();
}
});
}
@Override
public boolean onTouchEvent(MotionEvent event) {
final ImageView imageView = new ImageView(mContext);
LayoutParams params = new LayoutParams(300, 300);
params.leftMargin = (int) event.getX() - 150;
params.topMargin = (int) event.getY() - 300;
imageView.setImageDrawable(getResources().getDrawable(R.drawable.heart_red));
imageView.setLayoutParams(params);
addView(imageView);
AnimatorSet animatorSet = new AnimatorSet();
animatorSet.play(scale(imageView, "scaleX", 2f, 0.9f, 100, 0))
.with(scale(imageView, "scaleY", 2f, 0.9f, 100, 0))
.with(rotation(imageView, 0, 0, num[new Random().nextInt(4)]))
.with(alpha(imageView, 0, 1, 100, 0))
.with(scale(imageView, "scaleX", 0.9f, 1, 50, 150))
.with(scale(imageView, "scaleY", 0.9f, 1, 50, 150))
.with(translationY(imageView, 0, -600, 800, 400))
.with(alpha(imageView, 1, 0, 300, 400))
.with(scale(imageView, "scaleX", 1, 3f, 700, 400))
.with(scale(imageView, "scaleY", 1, 3f, 700, 400));
animatorSet.start();
animatorSet.addListener(new AnimatorListenerAdapter() {
@Override
public void onAnimationEnd(Animator animation) {
super.onAnimationEnd(animation);
removeViewInLayout(imageView);
}
});
return super.onTouchEvent(event);
}
public static ObjectAnimator scale(View view, String propertyName, float from, float to, long time, long delayTime) {
ObjectAnimator translation = ObjectAnimator.ofFloat(view
, propertyName
, from, to);
translation.setInterpolator(new LinearInterpolator());
translation.setStartDelay(delayTime);
translation.setDuration(time);
return translation;
}
public static ObjectAnimator translationX(View view, float from, float to, long time, long delayTime) {
ObjectAnimator translation = ObjectAnimator.ofFloat(view
, "translationX"
, from, to);
translation.setInterpolator(new LinearInterpolator());
translation.setStartDelay(delayTime);
translation.setDuration(time);
return translation;
}
public static ObjectAnimator translationY(View view, float from, float to, long time, long delayTime) {
ObjectAnimator translation = ObjectAnimator.ofFloat(view
, "translationY"
, from, to);
translation.setInterpolator(new LinearInterpolator());
translation.setStartDelay(delayTime);
translation.setDuration(time);
return translation;
}
public static ObjectAnimator alpha(View view, float from, float to, long time, long delayTime) {
ObjectAnimator translation = ObjectAnimator.ofFloat(view
, "alpha"
, from, to);
translation.setInterpolator(new LinearInterpolator());
translation.setStartDelay(delayTime);
translation.setDuration(time);
return translation;
}
public static ObjectAnimator rotation(View view, long time, long delayTime, float... values) {
ObjectAnimator rotation = ObjectAnimator.ofFloat(view, "rotation", values);
rotation.setDuration(time);
rotation.setStartDelay(delayTime);
rotation.setInterpolator(new TimeInterpolator() {
@Override
public float getInterpolation(float input) {
return input;
}
});
return rotation;
}
}實(shí)現(xiàn)思路
在點(diǎn)擊時(shí)觸發(fā)將心形的圖片add到整個(gè)view中,然后在執(zhí)行動(dòng)畫(huà)。主要的處理邏輯都在onTouchEvent()事件中,下面我們來(lái)詳細(xì)講解一下思路和代碼:
@Override
public boolean onTouchEvent(MotionEvent event) {
final ImageView imageView = new ImageView(mContext);
LayoutParams params = new LayoutParams(300, 300);
params.leftMargin = (int) event.getX() - 150;
params.topMargin = (int) event.getY() - 300;
imageView.setImageDrawable(getResources().getDrawable(R.drawable.heart_red));
imageView.setLayoutParams(params);
addView(imageView);
AnimatorSet animatorSet = new AnimatorSet();
animatorSet.play(scale(imageView, "scaleX", 2f, 0.9f, 100, 0))
.with(scale(imageView, "scaleY", 2f, 0.9f, 100, 0))
.with(rotation(imageView, 0, 0, num[new Random().nextInt(4)]))
.with(alpha(imageView, 0, 1, 100, 0))
.with(scale(imageView, "scaleX", 0.9f, 1, 50, 150))
.with(scale(imageView, "scaleY", 0.9f, 1, 50, 150))
.with(translationY(imageView, 0, -600, 800, 400))
.with(alpha(imageView, 1, 0, 300, 400))
.with(scale(imageView, "scaleX", 1, 3f, 700, 400))
.with(scale(imageView, "scaleY", 1, 3f, 700, 400));
animatorSet.start();
animatorSet.addListener(new AnimatorListenerAdapter() {
@Override
public void onAnimationEnd(Animator animation) {
super.onAnimationEnd(animation);
removeViewInLayout(imageView);
}
});
return super.onTouchEvent(event);
}?首先,我們需要在觸摸事件中做監(jiān)聽(tīng),當(dāng)有觸摸時(shí),創(chuàng)建一個(gè)展示心形圖片的ImageView。
final ImageView imageView = new ImageView(mContext); imageView.setImageDrawable(getResources().getDrawable(R.drawable.heart_red));//設(shè)置紅色心形圖片
?設(shè)置圖片展示的位置,是需要在手指觸摸的位置上方,即觸摸點(diǎn)是心形的下方角的位置。所以我們需要將ImageView設(shè)置到手指的位置
LayoutParams params = new LayoutParams(300, 300); params.leftMargin = (int) event.getX() - 150; params.topMargin = (int) event.getY() - 300; imageView.setLayoutParams(params);
?給imageView add到父view中。
addView(imageView);
?設(shè)置imageView動(dòng)畫(huà)
AnimatorSet animatorSet = new AnimatorSet();
animatorSet.play(scale(imageView, "scaleX", 2f, 0.9f, 100, 0))//縮放動(dòng)畫(huà),X軸2倍縮小至0.9倍
.with(scale(imageView, "scaleY", 2f, 0.9f, 100, 0))//縮放動(dòng)畫(huà),Y軸2倍縮小至0.9倍
.with(rotation(imageView, 0, 0, num[new Random().nextInt(4)]))//旋轉(zhuǎn)動(dòng)畫(huà),隨機(jī)旋轉(zhuǎn)角度num={-30.-20,0,20,30}
.with(alpha(imageView, 0, 1, 100, 0))//漸變透明度動(dòng)畫(huà),透明度從0-1.
.with(scale(imageView, "scaleX", 0.9f, 1, 50, 150))//縮放動(dòng)畫(huà),X軸0.9倍縮小至1倍
.with(scale(imageView, "scaleY", 0.9f, 1, 50, 150))//縮放動(dòng)畫(huà),Y軸0.9倍縮小至1倍
.with(translationY(imageView, 0, -600, 800, 400))//平移動(dòng)畫(huà),Y軸從0向上移動(dòng)600單位
.with(alpha(imageView, 1, 0, 300, 400))//透明度動(dòng)畫(huà),從1-0
.with(scale(imageView, "scaleX", 1, 3f, 700, 400))//縮放動(dòng)畫(huà),X軸1倍放大至3倍
.with(scale(imageView, "scaleY", 1, 3f, 700, 400));//縮放動(dòng)畫(huà),Y軸1倍放大至3倍
animatorSet.start();?當(dāng)然,我們不可能無(wú)限制的增加view,在view消失之后,需要手動(dòng)的移除改ImageView。
animatorSet.addListener(new AnimatorListenerAdapter() {
@Override
public void onAnimationEnd(Animator animation) {
super.onAnimationEnd(animation);
removeViewInLayout(imageView);
}
});關(guān)于怎么在Android中自定義view實(shí)現(xiàn)抖音點(diǎn)贊效果就分享到這里了,希望以上內(nèi)容可以對(duì)大家有一定的幫助,可以學(xué)到更多知識(shí)。如果覺(jué)得文章不錯(cuò),可以把它分享出去讓更多的人看到。
標(biāo)題名稱:怎么在Android中自定義view實(shí)現(xiàn)抖音點(diǎn)贊效果-創(chuàng)新互聯(lián)
轉(zhuǎn)載源于:http://chinadenli.net/article42/diojec.html
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