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Make LottieAnimationView reusable #7

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merged 1 commit into from
Nov 8, 2016
Merged

Make LottieAnimationView reusable #7

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21 changes: 21 additions & 0 deletions LottieSample/src/main/java/com/airbnb/lottie/samples/AssetUtils.java
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@@ -0,0 +1,21 @@
package com.airbnb.lottie.samples;

import android.content.Context;

import java.io.IOException;
import java.util.ArrayList;
import java.util.List;

class AssetUtils {

static List<String> getJsonAssets(Context context, String path) throws IOException {
String[] assetList = context.getAssets().list(path);
List<String> files = new ArrayList<>();
for (String asset : assetList) {
if (asset.toLowerCase().endsWith(".json")) {
files.add(asset);
}
}
return files;
}
}
181 changes: 181 additions & 0 deletions LottieSample/src/main/java/com/airbnb/lottie/samples/CycleFragment.java
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@@ -0,0 +1,181 @@
package com.airbnb.lottie.samples;

import android.animation.Animator;
import android.animation.ValueAnimator;
import android.annotation.SuppressLint;
import android.os.Bundle;
import android.support.annotation.Nullable;
import android.support.design.widget.Snackbar;
import android.support.v4.app.Fragment;
import android.support.v4.util.Pair;
import android.support.v7.widget.AppCompatSeekBar;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Button;
import android.widget.SeekBar;
import android.widget.TextView;
import android.widget.ToggleButton;

import com.airbnb.lottie.LottieAnimationView;

import java.io.IOException;
import java.util.List;

import butterknife.BindView;
import butterknife.ButterKnife;
import butterknife.OnCheckedChanged;
import butterknife.OnClick;

import static com.airbnb.lottie.samples.R.id.play;

public class CycleFragment extends Fragment {

static CycleFragment newInstance() {
return new CycleFragment();
}

@BindView(R.id.animation_view) LottieAnimationView animationView;
@BindView(R.id.seek_bar) AppCompatSeekBar seekBar;
@BindView(play) Button playButton;
@BindView(R.id.loop_button) ToggleButton loopButton;
@BindView(R.id.frames_per_second) TextView fpsView;
@BindView(R.id.dropped_frames) TextView droppedFramesView;
@BindView(R.id.dropped_frames_per_second) TextView droppedFramesPerSecondView;

private List<String> jsonAssets;
private int nextAssetIndex;

private boolean canceled;

@Nullable
@Override
public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.fragment_cycle, container, false);
ButterKnife.bind(this, view);

updatePlayButtonText();
animationView.addAnimatorListener(new Animator.AnimatorListener() {
@Override
public void onAnimationStart(Animator animation) {
startRecordingDroppedFrames();
}

@Override
public void onAnimationEnd(Animator animation) {
recordDroppedFrames();
if (!canceled) {
animationView.post(new Runnable() {
@Override
public void run() {
playNext();
}
});
}
canceled = false;
}

@Override
public void onAnimationCancel(Animator animation) {
canceled = true;
}

@Override
public void onAnimationRepeat(Animator animation) {
recordDroppedFrames();
startRecordingDroppedFrames();
}
});
animationView.addAnimatorUpdateListener(new ValueAnimator.AnimatorUpdateListener() {
@Override
public void onAnimationUpdate(ValueAnimator animation) {
seekBar.setProgress((int) (animation.getAnimatedFraction() * 100));
}
});

seekBar.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() {
@Override
public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {
animationView.setProgress(progress / 100f);
}

@Override
public void onStartTrackingTouch(SeekBar seekBar) {}

@Override
public void onStopTrackingTouch(SeekBar seekBar) {}
});

try {
jsonAssets = AssetUtils.getJsonAssets(getContext(), "");
} catch (IOException e) {
//noinspection ConstantConditions
Snackbar.make(container, R.string.invalid_assets, Snackbar.LENGTH_LONG).show();
}

setNextAnimation();

return view;
}

private void setNextAnimation() {
if (jsonAssets.isEmpty()) {
return;
}
animationView.setAnimation(jsonAssets.get(nextAssetIndex));
nextAssetIndex = (nextAssetIndex + 1) % jsonAssets.size();
}

private void playNext() {
setNextAnimation();
animationView.playAnimation();
}

@Override
public void onStop() {
animationView.cancelAnimation();
super.onStop();
}

@OnClick(play)
public void onPlayClicked() {
if (animationView.isAnimating()) {
animationView.cancelAnimation();
updatePlayButtonText();
} else {
animationView.playAnimation();
updatePlayButtonText();
}
}

private void updatePlayButtonText() {
playButton.setText(animationView.isAnimating() ? "Cancel" : "Play");
}

@OnCheckedChanged(R.id.loop_button)
public void onLoopChanged(boolean loop) {
animationView.loop(loop);
if (!loop) {
animationView.cancelAnimation();
}
}

private void startRecordingDroppedFrames() {
getApplication().startRecordingDroppedFrames();
}

@SuppressLint({"SetTextI18n", "DefaultLocale"})
private void recordDroppedFrames() {
Pair<Integer, Long> droppedFrames = getApplication().stopRecordingDroppedFrames();
int targetFrames = (int) ((droppedFrames.second / 1000000000f) * 60);
int actualFrames = targetFrames - droppedFrames.first;
fpsView.setText(String.format("Fps: %.0f", actualFrames / (animationView.getDuration() / 1000f)));
droppedFramesView.setText("Dropped frames: " + droppedFrames.first);
float droppedFps = droppedFrames.first / (droppedFrames.second / 1000000000f);
droppedFramesPerSecondView.setText(String.format("Dropped frames per second: %.0f", droppedFps));
}

private ILottieApplication getApplication() {
return (ILottieApplication) getActivity().getApplication();
}
}
59 changes: 43 additions & 16 deletions LottieSample/src/main/java/com/airbnb/lottie/samples/ListFragment.java
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Expand Up @@ -13,6 +13,7 @@
import android.widget.TextView;

import java.io.IOException;
import java.util.List;

import butterknife.BindView;
import butterknife.ButterKnife;
Expand All @@ -37,9 +38,8 @@ public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container,
((AppCompatActivity) getActivity()).setSupportActionBar(toolbar);

recyclerView.setAdapter(adapter);
String[] files = null;
try {
adapter.setFiles(getContext().getAssets().list(""));
adapter.setFiles(AssetUtils.getJsonAssets(getContext(), ""));
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Directories were appearing in the list and caused a crash when tapped, so this filters out any non-json assets.

} catch (IOException e) {
//noinspection ConstantConditions
Snackbar.make(container, R.string.invalid_assets, Snackbar.LENGTH_LONG).show();
Expand All @@ -66,13 +66,23 @@ private void onGridClicked() {
.commit();
}

private void onCycleClicked() {
getFragmentManager().beginTransaction()
.addToBackStack(null)
.setCustomAnimations(R.anim.slide_in_right, R.anim.hold, R.anim.hold, R.anim.slide_out_right)
.remove(this)
.replace(R.id.content_2, CycleFragment.newInstance())
.commit();
}

final class FileAdapter extends RecyclerView.Adapter<StringViewHolder> {
static final int VIEW_TYPE_GRID = 1;
static final int VIEW_TYPE_FILE = 2;
static final int VIEW_TYPE_CYCLE = 2;
static final int VIEW_TYPE_FILE = 3;

@Nullable private String[] files = null;
@Nullable private List<String> files = null;

void setFiles(@Nullable String[] files) {
void setFiles(@Nullable List<String> files) {
this.files = files;
notifyDataSetChanged();
}
Expand All @@ -84,22 +94,34 @@ public StringViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {

@Override
public void onBindViewHolder(StringViewHolder holder, int position) {
if (holder.getItemViewType() == VIEW_TYPE_GRID) {
holder.bind("Grid");
} else {
//noinspection ConstantConditions
holder.bind(files[position - 1]);
switch (holder.getItemViewType()) {
case VIEW_TYPE_GRID:
holder.bind("Grid");
break;
case VIEW_TYPE_CYCLE:
holder.bind("Cycle");
break;
default:
//noinspection ConstantConditions
holder.bind(files.get(position - 2));
}
}

@Override
public int getItemCount() {
return (files == null ? 0 : files.length) + 1;
return (files == null ? 0 : files.size()) + 2;
}

@Override
public int getItemViewType(int position) {
return position == 0 ? VIEW_TYPE_GRID : VIEW_TYPE_FILE;
switch (position) {
case 0:
return VIEW_TYPE_GRID;
case 1:
return VIEW_TYPE_CYCLE;
default:
return VIEW_TYPE_FILE;
}
}
}

Expand All @@ -117,10 +139,15 @@ void bind(final String name) {
itemView.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
if (getItemViewType() == FileAdapter.VIEW_TYPE_GRID) {
onGridClicked();
} else {
onFileClicked(name);
switch (getItemViewType()) {
case FileAdapter.VIEW_TYPE_GRID:
onGridClicked();
break;
case FileAdapter.VIEW_TYPE_CYCLE:
onCycleClicked();
break;
default:
onFileClicked(name);
}
}
});
Expand Down
72 changes: 72 additions & 0 deletions LottieSample/src/main/res/layout/fragment_cycle.xml
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<?xml version="1.0" encoding="utf-8"?>
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:id="@+id/root_view"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:clipChildren="false"
android:background="@android:color/white">

<com.airbnb.lottie.LottieAnimationView
android:id="@+id/animation_view"
android:layout_gravity="center"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="@drawable/outline"/>

<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal">
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical">
<Button
android:id="@+id/play"
android:layout_width="wrap_content"
android:layout_height="wrap_content"/>

<ToggleButton
android:id="@+id/loop_button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textOn="Loop"
android:textOff="Single"/>
</LinearLayout>


<android.support.v7.widget.AppCompatSeekBar
android:id="@+id/seek_bar"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_gravity="center_vertical"
android:layout_weight="1"/>
</LinearLayout>

<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="bottom"
android:layout_marginLeft="16dp"
android:layout_marginBottom="8dp"
android:orientation="vertical">
<TextView
android:id="@+id/frames_per_second"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginBottom="8dp"/>

<TextView
android:id="@+id/dropped_frames"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginBottom="8dp"/>

<TextView
android:id="@+id/dropped_frames_per_second"
android:layout_width="wrap_content"
android:layout_height="wrap_content"/>
</LinearLayout>

</FrameLayout>
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