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Tweak and comment new story list loading indicator.

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This commit is contained in:
dosiecki 2015-02-21 13:52:46 -08:00
parent 4489d9faf0
commit cb2da09ffd
3 changed files with 59 additions and 21 deletions
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2
clients/android/NewsBlur/res/layout/row_loading_throbber.xml
View file

@ -7,6 +7,6 @@
<com.newsblur.view.ProgressThrobber
android:id="@+id/itemlist_loading_throb"
android:layout_width="fill_parent"
android:layout_height="4dp" />
android:layout_height="6dp" />
</LinearLayout>

5
clients/android/NewsBlur/src/com/newsblur/fragment/ItemListFragment.java
View file

@ -65,7 +65,10 @@ public abstract class ItemListFragment extends NbFragment implements OnScrollLis
itemList = (ListView) v.findViewById(R.id.itemlistfragment_list);
View footerView = inflater.inflate(R.layout.row_loading_throbber, null);
progressView = (ProgressThrobber) footerView.findViewById(R.id.itemlist_loading_throb);
progressView.setColor(getResources().getColor(R.color.refresh_3));
progressView.setColors(getResources().getColor(R.color.refresh_1),
getResources().getColor(R.color.refresh_2),
getResources().getColor(R.color.refresh_3),
getResources().getColor(R.color.refresh_4));
setupBezelSwipeDetector(itemList);
itemList.setEmptyView(v.findViewById(R.id.empty_view));
itemList.addFooterView(footerView, null, false);

73
clients/android/NewsBlur/src/com/newsblur/view/ProgressThrobber.java
View file

@ -1,24 +1,31 @@
package com.newsblur.view;
import android.animation.ObjectAnimator;
import android.animation.ValueAnimator;
import android.animation.*;
import android.content.Context;
import android.graphics.Canvas;
import android.graphics.Color;
import android.util.AttributeSet;
import android.util.Log;
import android.view.animation.*;
import android.view.View;
import com.newsblur.R;
/**
* A indeterminate loading indicator that pulses between two colours.
* A indeterminate loading indicator that pulses between colours. Inspired by the
* 4.X-series impl of MaterialProgressDrawable (but platform-stable, public access,
* and without the support lib deps) and the NewsBlur.com pulsing load indicator.
*/
public class ProgressThrobber extends View {
ObjectAnimator animator;
int color = Color.BLUE;
float saturation = 1f;
private TimeInterpolator acdcInterp = new AccelerateDecelerateInterpolator();
private TimeInterpolator lineInterp = new LinearInterpolator();
private AnimatorSet animator;
private int[] colors = {Color.CYAN, Color.BLUE, Color.GREEN, Color.LTGRAY};
private float h;
private float s;
private float v;
public ProgressThrobber(Context context) {
super(context);
@ -30,35 +37,63 @@ public class ProgressThrobber extends View {
setupAnimator();
}
public void setColor(int color) {
this.color = color;
public void setColors(int... colors) {
this.colors = colors;
setupAnimator();
}
private void setupAnimator() {
animator = ObjectAnimator.ofFloat(this, "saturation", 0f, 1f);
animator.setRepeatCount(ValueAnimator.INFINITE);
animator.setRepeatMode(ValueAnimator.REVERSE);
animator.setDuration(1500L);
float[] Hs = new float[colors.length];
float[] Ss = new float[colors.length];
float[] Vs = new float[colors.length];
for (int i=0; i<colors.length; i++) {
int c = colors[i];
float[] hsv = new float[3];
Color.colorToHSV(c, hsv);
Hs[i] = hsv[0];
Ss[i] = hsv[1];
Vs[i] = hsv[2];
}
ObjectAnimator animatorH = ObjectAnimator.ofFloat(this, "h", Hs);
animatorH.setRepeatCount(ValueAnimator.INFINITE);
animatorH.setRepeatMode(ValueAnimator.REVERSE);
animatorH.setInterpolator(acdcInterp);
ObjectAnimator animatorS = ObjectAnimator.ofFloat(this, "s", Ss);
animatorS.setRepeatCount(ValueAnimator.INFINITE);
animatorS.setRepeatMode(ValueAnimator.REVERSE);
animatorS.setInterpolator(lineInterp);
ObjectAnimator animatorV = ObjectAnimator.ofFloat(this, "v", Vs);
animatorV.setRepeatCount(ValueAnimator.INFINITE);
animatorV.setRepeatMode(ValueAnimator.REVERSE);
animatorV.setInterpolator(lineInterp);
animator = new AnimatorSet();
animator.playTogether(animatorH, animatorS, animatorV);
animator.setDuration(500L * colors.length);
animator.start();
}
public void setSaturation(float sat) {
this.saturation = sat;
public void setH(float h) {
this.h = h;
}
public void setS(float s) {
this.s = s;
}
public void setV(float v) {
this.v = v;
this.invalidate();
}
protected void onDraw(Canvas canvas) {
float[] hsv = new float[3];
Color.colorToHSV(color, hsv);
hsv[1] = saturation;
float[] hsv = {h,s,v};
canvas.drawColor(Color.HSVToColor(hsv));
}
@Override
public void setVisibility(int visibility) {
public synchronized void setVisibility(int visibility) {
super.setVisibility(visibility);
if (visibility == View.VISIBLE) {
animator.start();
if (! animator.isRunning()) animator.start();
} else {
animator.end();
}