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Accomodating multiple preview screen with ViewPager for the users to

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swipe across, along with some UI refinements.

Change-Id: I9487bcce88cdab490a4b6baa752224acddc5be52
This commit is contained in:
Noah Wang
2016-01-12 09:00:57 -08:00
parent 4ccc2c3537
commit 49fabb9b47
13 changed files with 317 additions and 132 deletions
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90
src/com/android/settings/PreviewSeekBarPreferenceFragment.java
View File

@@ -16,20 +16,14 @@
package com.android.settings;
import android.annotation.Nullable;
import android.content.Context;
import android.content.res.Configuration;
import android.os.Bundle;
import android.util.AttributeSet;
import android.support.v4.view.ViewPager;
import android.view.LayoutInflater;
import android.view.MotionEvent;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
import android.view.animation.AccelerateInterpolator;
import android.view.animation.DecelerateInterpolator;
import android.view.animation.Interpolator;
import android.widget.FrameLayout;
import android.widget.SeekBar;
import android.widget.SeekBar.OnSeekBarChangeListener;
import android.widget.TextView;
@@ -53,18 +47,11 @@ public abstract class PreviewSeekBarPreferenceFragment extends SettingsPreferenc
protected int mActivityLayoutResId;
/** Resource id of the layout that defines the contents instide preview screen. */
protected int mPreviewSampleResId;
protected int[] mPreviewSampleResIds;
/** Duration to use when cross-fading between previews. */
private static final long CROSS_FADE_DURATION_MS = 400;
private ViewPager mPreviewPager;
private PreviewPagerAdapter mPreviewPagerAdapter;
/** Interpolator to use when cross-fading between previews. */
private static final Interpolator FADE_IN_INTERPOLATOR = new DecelerateInterpolator();
/** Interpolator to use when cross-fading between previews. */
private static final Interpolator FADE_OUT_INTERPOLATOR = new AccelerateInterpolator();
private ViewGroup mPreviewFrame;
private TextView mLabel;
private View mLarger;
private View mSmaller;
@@ -96,10 +83,12 @@ public abstract class PreviewSeekBarPreferenceFragment extends SettingsPreferenc
}
@Override
public void onStartTrackingTouch(SeekBar seekBar) {}
public void onStartTrackingTouch(SeekBar seekBar) {
}
@Override
public void onStopTrackingTouch(SeekBar seekBar) {}
public void onStopTrackingTouch(SeekBar seekBar) {
}
});
mSmaller = content.findViewById(R.id.smaller);
@@ -130,29 +119,19 @@ public abstract class PreviewSeekBarPreferenceFragment extends SettingsPreferenc
seekBar.setEnabled(false);
}
mPreviewFrame = (FrameLayout) content.findViewById(R.id.preview_frame);
// Populate the sample layouts.
final Context context = getContext();
final Configuration origConfig = context.getResources().getConfiguration();
Configuration[] configurations = new Configuration[mEntries.length];
for (int i = 0; i < mEntries.length; ++i) {
final Configuration config = createConfig(origConfig, i);
// Create a new configuration for the specified value. It won't
// have any theme set, so manually apply the current theme.
final Context configContext = context.createConfigurationContext(config);
configContext.setTheme(context.getThemeResId());
final LayoutInflater configInflater = LayoutInflater.from(configContext);
final View sampleView = configInflater.inflate(mPreviewSampleResId, mPreviewFrame, false);
sampleView.setAlpha(0);
sampleView.setVisibility(View.INVISIBLE);
mPreviewFrame.addView(sampleView);
configurations[i] = createConfig(origConfig, i);
}
setPreviewLayer(mInitialIndex, false);
mPreviewPagerAdapter = new PreviewPagerAdapter(context, mPreviewSampleResIds,
configurations);
mPreviewPager = (ViewPager) content.findViewById(R.id.preview_pager);
mPreviewPager.setAdapter(mPreviewPagerAdapter);
setPreviewLayer(mInitialIndex, false);
return root;
}
@@ -172,46 +151,11 @@ public abstract class PreviewSeekBarPreferenceFragment extends SettingsPreferenc
private void setPreviewLayer(int index, boolean animate) {
mLabel.setText(mEntries[index]);
if (mCurrentIndex >= 0) {
final View lastLayer = mPreviewFrame.getChildAt(mCurrentIndex);
if (animate) {
lastLayer.animate()
.alpha(0)
.setInterpolator(FADE_OUT_INTERPOLATOR)
.setDuration(CROSS_FADE_DURATION_MS)
.withEndAction(new Runnable() {
@Override
public void run() {
lastLayer.setVisibility(View.INVISIBLE);
}
});
} else {
lastLayer.setAlpha(0);
lastLayer.setVisibility(View.INVISIBLE);
}
}
final View nextLayer = mPreviewFrame.getChildAt(index);
if (animate) {
nextLayer.animate()
.alpha(1)
.setInterpolator(FADE_IN_INTERPOLATOR)
.setDuration(CROSS_FADE_DURATION_MS)
.withStartAction(new Runnable() {
@Override
public void run() {
nextLayer.setVisibility(View.VISIBLE);
}
});
} else {
nextLayer.setVisibility(View.VISIBLE);
nextLayer.setAlpha(1);
}
mSmaller.setEnabled(index > 0);
mLarger.setEnabled(index < mEntries.length - 1);
mPreviewPagerAdapter.setPreviewLayer(index, mCurrentIndex, mPreviewPager.getCurrentItem(),
animate);
mCurrentIndex = index;
}