Android------animation effects in Android

There are four animation effects in Android:

Alphaanimation: Transparency Animation effect

Scaleanimation: Zoom animation effect

Translateanimation: Displacement animation effect

Rotateanimation: Rotate animation effect

1. Transparent animation effect

public class Mainactivity extends Activity {private alphaanimation aa; @Overrideprotected void OnCreate (Bundle Savedinstancestate) {super.oncreate (savedinstancestate); Setcontentview (r.layout.activity_main); AA = new Alphaanimation (1, 0); aa.setduration (3000);//Set Listener event Aa.setanimationlistener (new Animationlistener () {@ overridepublic void Onanimationstart (Animation Animation) {toast.maketext (Mainactivity.this, "start", 0). Show (); @Overridepublic void Onanimationrepeat (Animation Animation) {toast.maketext (mainactivity.this, "repeat", 0). Show (); @Overridepublic void Onanimationend (Animation Animation) {toast.maketext (Mainactivity.this, "end", 0). Show ();}); Findviewbyid (R.ID.BTN). Setonclicklistener (New Onclicklistener () {@Overridepublic void OnClick (View v) { V.startanimation (AA);}});}}

Complete the animation with an XML configuration file

Create an XML file: Right-click res-> Select android XML files

A Anim folder is generated in the Res directory after the creation is complete

Aa.xml:

<?xml version= "1.0" encoding= "Utf-8"? ><alpha xmlns:android= "Http://schemas.android.com/apk/res/android"    android:duration= "android:fromalpha="    1 "    android:toalpha=" 0 "></alpha>

The activity only needs to declare the alphaanimation and invoke it in the listener event of the button.

V.setanimation (Animationutils.loadanimation (MAINACTIVITY.THIS,R.ANIM.AA));

The effect is the same.

2. Zoom animation effect

public class Mainactivity extends Activity {private scaleanimation sa; @Overrideprotected void OnCreate (Bundle Savedinstancestate) {super.oncreate (savedinstancestate); Setcontentview (r.layout.activity_main); sa = new Scaleanimation (0, 1, 0, 1, animation.relative_to_self, 0.5f,animation.relative_to_self, 0.5f); Sa.setduration (2000); Findviewbyid (R.ID.BTN). Setonclicklistener (New Onclicklistener () {@Overridepublic void OnClick (View v) { V.startanimation (SA);}});}}

Through the XML file:

<?xml version= "1.0" encoding= "Utf-8"? ><scale xmlns:android= "Http://schemas.android.com/apk/res/android"    android:duration= "android:fromxscale="    0 "    android:fromyscale=" 0 "    android:pivotx=" 50% "    android:pivoty= "50%"    android:toxscale= "1"    android:toyscale= "1" ></scale>

3. Displacement animation effect

public class Mainactivity extends Activity {private translateanimation ta; @Overrideprotected void OnCreate (Bundle Savedinstancestate) {super.oncreate (savedinstancestate); Setcontentview (r.layout.activity_main); ta = new Translateanimation (0, 0, ta.setduration), Findviewbyid (R.ID.BTN) Setonclicklistener (new Onclicklistener () {@Overridepublic void OnClick (View v) {v.startanimation (TA);//V.startanimation ( Animationutils.loadanimation (//Mainactivity.this, R.anim.ta));}});}}

Xml:

<?xml version= "1.0" encoding= "Utf-8"? ><translate xmlns:android= "http://schemas.android.com/apk/res/ Android "    android:duration=" "    android:fromxdelta=" 0 "    android:fromydelta=" 0 "    android: Toxdelta= "Android:toydelta="    ></translate>

4. Rotate animation effect

public class Mainactivity extends Activity {private rotateanimation ra; @Overrideprotected void OnCreate (Bundle Savedinstancestate) {super.oncreate (savedinstancestate); Setcontentview (r.layout.activity_main);//RA = new Rotateanimation (0, N/a);//RA = new Rotateanimation (0, N/A, +), RA = new Rotateanimation (0, animation.relative_t O_self, 0.5f,animation.relative_to_self, 0.5f); ra.setduration (+); Findviewbyid (R.ID.BTN). Setonclicklistener ( New Onclicklistener () {@Overridepublic void OnClick (View v) {v.startanimation (RA);}});}}

Animation blending:

Animationset

public class Mainactivity extends Activity {animationset as; @Overrideprotected void OnCreate (Bundle savedinstancestate) {super.oncreate (savedinstancestate); Setcontentview (r.layout.activity_main); as = new Animationset (true); As.setduration (2000); Alphaanimation AA = new Alphaanimation (0, 1); Aa.setduration (2000); Translateanimation ta = new translateanimation (0, 0, $), ta.setduration (+); as.addanimation (TA); As.addanimation (AA); Findviewbyid (R.ID.BTN). Setonclicklistener (New Onclicklistener () {@Overridepublic void OnClick ( View v) {v.startanimation (AS);}});}}

To create an XML file select Set:

<?xml version= "1.0" encoding= "Utf-8"? ><set xmlns:android= "Http://schemas.android.com/apk/res/android"    android:duration= "android:shareinterpolator=" "    true" >    <alpha        android:fromalpha= "0"        android:toalpha= "1"/>    <translate        android:fromxdelta= "0"        android:fromydelta= "0"        Android:toxdelta= "Android:toydelta="        /></set>

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Android------animation effects in Android