Animatedly reduce button size on press and regain

问题:

I want a to create a button that changes size (little bit smaller) when it's pressed, and after the button is released again the size should change back to normal size.I am using Scale xml to achieve this but it re-positioned itself even if i do not release button.

button here i am referring to imageview.

here is my source code :-

imgSpin = (ImageView) findViewById(R.id.iv_spins);
    imgSpin.setOnTouchListener(new View.OnTouchListener() {
            @Override
            public boolean onTouch(View v, MotionEvent event) {
                switch (event.getAction()) {
                case MotionEvent.ACTION_DOWN:
                    imgSpin.startAnimation(mAnimation);
                    spinslot();
                    break;

                case MotionEvent.ACTION_UP:
                    imgSpin.clearAnimation();
                    imgSpin.setEnabled(false);
                    break;
                }
                return true;
            }
        });

my scale Xml :-

<scale xmlns:android="http://schemas.android.com/apk/res/android"
    android:duration="200"
    android:fromXScale=".8"
    android:fromYScale=".8"
    android:pivotX="50%"
    android:pivotY="50%"
    android:toXScale="1.0"
    android:toYScale="1.0" >

</scale>

my XML:-

 <LinearLayout
                android:id="@+id/layout_status"
                android:layout_width="match_parent"
                android:layout_height="0dp"
                android:layout_weight=".2"
                android:orientation="horizontal" >

                <View
                    android:layout_width="0dp"
                    android:layout_height="wrap_content"
                    android:layout_weight=".5" />

                <ImageView
                    android:layout_width="0dp"
                    android:layout_height="wrap_content"
                    android:layout_weight="2.1"
                    android:background="@drawable/bootser" />

                <LinearLayout
                    android:layout_width="0dp"
                    android:layout_height="wrap_content"
                    android:layout_weight="2.5"
                    android:background="@drawable/bet_bg"
                    android:gravity="center_vertical"
                    android:orientation="horizontal"
                    android:weightSum="1" >

                    <ImageView
                        android:layout_width="0dp"
                        android:layout_height="match_parent"
                        android:layout_gravity="center_vertical"
                        android:layout_weight=".2"
                        android:src="@drawable/leftarrow" />

                    <TextView
                        android:layout_width="0dp"
                        android:layout_height="wrap_content"
                        android:layout_marginTop="1dp"
                        android:layout_weight=".6"
                        android:gravity="center"
                        android:text="Bet"
                        android:textColor="@android:color/white" />

                    <ImageView
                        android:layout_width="0dp"
                        android:layout_height="40dp"
                        android:layout_gravity="center_vertical"
                        android:layout_weight=".2"
                        android:src="@drawable/rightarrow" />
                </LinearLayout>

                <LinearLayout
                    android:layout_width="0dp"
                    android:layout_height="wrap_content"
                    android:layout_weight="2.5"
                    android:background="@drawable/container"
                    android:gravity="center" >

                    <TextView
                        android:layout_width="wrap_content"
                        android:layout_height="wrap_content"
                        android:layout_marginTop="2dp"
                        android:text="winning"
                        android:textColor="@android:color/white" />
                </LinearLayout>

                <ImageView
                    android:id="@+id/iv_spins"
                    android:layout_width="0dp"
                    android:layout_height="wrap_content"
                    android:layout_weight="1.9"
                    android:background="@drawable/spin" />

                <View
                    android:layout_width="0dp"
                    android:layout_height="wrap_content"
                    android:layout_weight=".5" />
            </LinearLayout>

I tried with paramLayout but as i set the weights in XML so it do not give me the effect on animation.

i already use this approach :-

case MotionEvent.ACTION_DOWN:
                ViewGroup.LayoutParams params = imgSpin.getLayoutParams();
                // Button new width
                params.width = params.width - (params.width *90/100);

                imgSpin.setLayoutParams(params);

                break;

params.width always return me zero so i tried to do this with weight , by using weight my view glitch on click ..i want it to be smooth so i am preferring scaling

Second approach :-

case MotionEvent.ACTION_DOWN:
                LinearLayout.LayoutParams params = (android.widget.LinearLayout.LayoutParams) imgSpin
                        .getLayoutParams();
                // Button new width
                params.weight = 1.7f;

                imgSpin.setLayoutParams(params);
                // imgSpin.startAnimation(mAnimation);
                // spinslot();
                break;

            case MotionEvent.ACTION_UP:
                LinearLayout.LayoutParams params2 = (android.widget.LinearLayout.LayoutParams) imgSpin
                        .getLayoutParams();
                // Button new width
                params2.weight = 1.9f;

                imgSpin.setLayoutParams(params2);
                // imgSpin.clearAnimation();
                imgSpin.setEnabled(false);
                break;
            }
            return true;

it works but not smooth

Please tell me how to do

Thanks

回答1:

Here is what you want :-

imgSpin.setOnTouchListener(new View.OnTouchListener() {
            @Override
            public boolean onTouch(View v, MotionEvent event) {
                switch (event.getAction()) {
                case MotionEvent.ACTION_DOWN:
                    ObjectAnimator scaleDownX = ObjectAnimator.ofFloat(imgSpin,
                            "scaleX", 0.8f);
                    ObjectAnimator scaleDownY = ObjectAnimator.ofFloat(imgSpin,
                            "scaleY", 0.8f);
                    scaleDownX.setDuration(1000);
                    scaleDownY.setDuration(1000);

                    AnimatorSet scaleDown = new AnimatorSet();
                    scaleDown.play(scaleDownX).with(scaleDownY);

                    scaleDown.start();

                    spinslot();
                    break;

                case MotionEvent.ACTION_UP:
                    ObjectAnimator scaleDownX2 = ObjectAnimator.ofFloat(
                            imgSpin, "scaleX", 1f);
                    ObjectAnimator scaleDownY2 = ObjectAnimator.ofFloat(
                            imgSpin, "scaleY", 1f);
                    scaleDownX2.setDuration(1000);
                    scaleDownY2.setDuration(1000);

                    AnimatorSet scaleDown2 = new AnimatorSet();
                    scaleDown2.play(scaleDownX2).with(scaleDownY2);

                    scaleDown2.start();

                    imgSpin.setEnabled(false);
                    break;
                }
                return true;
            }
        });

And just make this few changes in your xml :-

<ImageView
                    android:id="@+id/iv_spins"
                    android:layout_width="0dp"
                    android:layout_height="wrap_content"
                    android:layout_weight="1.9"
                    android:adjustViewBounds="true"
                    android:background="@drawable/spin"
                    android:scaleX="1"
                    android:scaleY="1" />

make use of scaleDown.play(scaleDownX).with(scaleDownY),it will keep the animated position and will not restore it back to original

Hope it solves your problem cheers

回答2:

Android Best Practice (for your requirement):

1- Create two XMLs in /res/animator

i. reduce_size.xml

<?xml version="1.0" encoding="utf-8"?>
<set android:ordering="sequentially"
    xmlns:android="http://schemas.android.com/apk/res/android">
    <set>
        <objectAnimator
            android:propertyName="scaleX"
            android:duration="300"
            android:valueTo="0.9f"
            android:valueType="floatType"/>
        <objectAnimator
            android:propertyName="scaleY"
            android:duration="300"
            android:valueTo="0.9f"
            android:valueType="floatType"/>
    </set>
</set>

ii. regain_size.xml

<?xml version="1.0" encoding="utf-8"?>
<set android:ordering="sequentially"
    xmlns:android="http://schemas.android.com/apk/res/android">
    <set>
        <objectAnimator
            android:propertyName="scaleX"
            android:duration="1000"
            android:valueTo="1f"
            android:startOffset="300"
            android:valueType="floatType"/>
        <objectAnimator
            android:propertyName="scaleY"
            android:duration="1000"
            android:valueTo="1f"
            android:startOffset="300"
            android:valueType="floatType"/>
    </set>
</set>

2- Usage

i. When MotionEvent.ACTION_DOWN

AnimatorSet reducer = (AnimatorSet) AnimatorInflater.loadAnimator(mContext,R.animator.squeeze_in);
reducer.setTarget(view);
reducer.start();

ii. When MotionEvent.ACTION_UP

AnimatorSet regainer = (AnimatorSet) AnimatorInflater.loadAnimator(mContext,R.animator.squeeze_out);
regainer.setTarget(view);
regainer.start();

This solution is tested thoroughly and guaranteed to achieve your requirement.

回答3:

You can do this programmatically as follows on the touchlistener

new View.OnTouchListener() {
  public boolean onTouch(View v, MotionEvent event) {
    if(event.getAction == MotionEvent.ACTION_DOWN) {
      // scale your value
      float reducedvalue = (float)0.7;
      v.setScaleX(reducedvalue);
      v.setScaleY(reducedvalue);
    }
    else if (event.getAction == MotionEvent.ACTION_UP) {
      v.setScaleX(1);
      v.setScaleY(1);
    }
  } 
}

回答4:

You can add fillafter property: android:fillAfter="true"

<scale xmlns:android="http://schemas.android.com/apk/res/android"
    android:duration="200"
    android:fromXScale=".8"
    android:fromYScale=".8"
    android:pivotX="50%"
    android:pivotY="50%"
    android:fillAfter="true"
    android:toXScale="1.0"
    android:toYScale="1.0" >
</scale>

回答5:

<ImageView
  android:id="@+id/iv_spins"
  android:layout_width="0dp"
  android:layout_height="wrap_content"
  android:layout_weight="1.9"
  android:adjustViewBounds="true"
  android:background="@drawable/spin"
  android:scaleX="1"
  android:scaleY="1" 
/>