我正在尝试将圆形显示动画应用于从 SplashScreen 活动转换到 MainActivity 的按钮单击。我已经尝试了人们给出的几乎所有解决方案，但我无法理解创建自定义动画的概念，例如用于活动更改的圆形显示。我可以成功地将其应用于当前活动视图，但不能应用于活动转换。
这是我的 SplashScreen.java
public class SplashScreen extends AppCompatActivity {
boolean isOpen = false;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_splash_screen);
final ImageButton startButton = (ImageButton) findViewById(R.id.button);
final TextView textView = (TextView)findViewById(R.id.tv1);
fadeInTextView(textView);
circularRevealDelayedImageButton(startButton);
}
public void fadeInTextView(final TextView textView){
textView.postDelayed(new Runnable() {
@Override
public void run() {
final TextSwitcher textSwitcher = (TextSwitcher)findViewById(R.id.ssj1);
textSwitcher.setFactory(new ViewSwitcher.ViewFactory() {
public View makeView() {
// TODO Auto-generated method stub
// create a TextView
TextView t = new TextView(SplashScreen.this);
// set the gravity of text to top and center horizontal
// set displayed text size
Resources r = getResources();
float px = TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, 23, r.getDisplayMetrics());
t.setTextSize(px);
t.setGravity(Gravity.CENTER_HORIZONTAL | Gravity.CENTER_VERTICAL);
t.setPadding(0,240,0,0);
Typeface type = Typeface.createFromAsset(getAssets(),"fonts/allura.ttf");
t.setTypeface(type);
t.setTextColor(getResources().getColor(R.color.black));
return t;
}
});
Animation anim = AnimationUtils.loadAnimation(getApplicationContext(),android.R.anim.fade_in);
textView.setVisibility(View.VISIBLE);
textView.setAnimation(anim);
textSwitcher.postDelayed(new Runnable() {
@Override
public void run() {
textSwitcher.setText("Hey There\nJaadi :)");
}
},2000);
textSwitcher.postDelayed(new Runnable() {
@Override
public void run() {
textSwitcher.setText("");
}
},7000);
textSwitcher.postDelayed(new Runnable() {
@Override
public void run() {
textSwitcher.setText("Press That\nHeart\nFor Me");
}
},9000);
}
},3000);
}
public void circularRevealDelayedImageButton(final ImageButton startButton){
startButton.postDelayed(new Runnable() {
@Override
public void run() {
// get the center for the clipping circle
int cx = startButton.getWidth() / 2;
int cy = startButton.getHeight() / 2;
// get the final radius for the clipping circle
float finalRadius = (float) Math.hypot(cx, cy);
// create the animator for this view (the start radius is zero)
Animator anim =
ViewAnimationUtils.createCircularReveal(startButton, cx, cy, 0, finalRadius);
// make the view visible and start the animation
startButton.setVisibility(View.VISIBLE);
anim.setDuration(350);
anim.start();
startButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
startActivity(new Intent(SplashScreen.this, MainActivity.class));
// WHAT TO ADD HERE??? FOR CIRCULAR REVEAL ANIMATION FOR THE ABOVE INTENT???
}
});
}
},13000);
}
}
当单击按钮并且 SplashScreen 转换为 MainActivity 时，我想制作自定义动画 (CircularReveal)。如果您能解释代码，那就太好了。我正在尝试解决这个问题超过一天，但仍然无法掌握任何东西。并建议需要在XML
这是 MainActivity.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:id="@+id/layoutcontent"
android:visibility="invisible"
android:transitionName="transition"
android:layout_height="match_parent"
tools:context="com.yourstrulyssj.foru.MainActivity">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Hello World!"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toTopOf="parent" />
</RelativeLayout>
这是我的 SplashScreen.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="@+id/layoutmain"
android:transitionName="transition"
tools:context="com.yourstrulyssj.foru.SplashScreen">
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="@drawable/rwall"
android:scaleType="centerCrop"
/>
<TextSwitcher
android:id="@+id/ssj1"
android:layout_width="300dip"
android:layout_height="400dip"
android:layout_alignStart="@+id/tv1"
android:layout_alignTop="@+id/tv1"
android:inAnimation="@android:anim/fade_in"
android:outAnimation="@android:anim/fade_out">
</TextSwitcher>
<TextView
android:id="@+id/tv1"
android:layout_width="300dip"
android:layout_height="400dip"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true"
android:layout_marginTop="51dp"
android:background="@drawable/back1"
android:fontFamily="cursive"
android:gravity="center"
android:text=""
android:textSize="80dip"
android:visibility="invisible" />
<ImageButton
android:id="@+id/button"
android:layout_width="60dp"
android:layout_height="60dp"
android:layout_alignParentBottom="true"
android:layout_centerHorizontal="true"
android:layout_marginBottom="26dp"
android:layout_weight="1"
android:background="@drawable/roundedbutton"
android:src="@drawable/ic_favorite_black_24dp"
android:visibility="invisible" />
</RelativeLayout>