LineageOS/android_development
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

New and improved Presentation demo.

Browse Source 
Less clutter, bigger letters!

Change-Id: Ie0d5626c6a83a0e96bbda9220aea1f945c1bd825
This commit is contained in:
Craig Mautner
2012-09-10 09:41:18 -07:00
parent 39e3b7fe23
commit 9dac35adda
4 changed files with 171 additions and 37 deletions
Download Patch File Download Diff File Expand all files Collapse all files

147
samples/ApiDemos/src/com/example/android/apis/app/PresentationActivity.java
View File

@@ -21,19 +21,26 @@ package com.example.android.apis.app;
import com.example.android.apis.R;
import android.app.Activity;
import android.app.AlertDialog;
import android.app.Presentation;
import android.content.Context;
import android.content.DialogInterface;
import android.content.res.Resources;
import android.graphics.Point;
import android.graphics.drawable.GradientDrawable;
import android.hardware.display.DisplayManager;
import android.os.Bundle;
import android.util.Log;
import android.util.SparseArray;
import android.view.Display;
import android.view.View;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.AdapterView;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
import android.widget.CheckBox;
import android.widget.CompoundButton;
import android.widget.CompoundButton.OnCheckedChangeListener;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.ListView;
import android.widget.TextView;
@@ -51,18 +58,20 @@ import android.widget.TextView;
* a few simulated secondary displays.
* </p>
*/
public class PresentationActivity extends Activity {
public class PresentationActivity extends Activity
implements OnCheckedChangeListener, OnClickListener {
private final String TAG = "PresentationActivity";
// The content that we want to show on the presentation.
private static final int[] CHANNELS = new int[] {
R.drawable.sample_4, R.drawable.frantic, R.drawable.beach,
R.drawable.photo1, R.drawable.photo2, R.drawable.photo3,
R.drawable.photo4, R.drawable.photo5, R.drawable.photo6,
};
private DisplayManager mDisplayManager;
private ListView mDisplayList;
private DisplayListAdapter mDisplayListAdapter;
private ListView mListView;
private int mNextChannelNumber;
// All active presentations indexed by display id.
@@ -88,10 +97,8 @@ public class PresentationActivity extends Activity {
setContentView(R.layout.presentation_activity);
mDisplayListAdapter = new DisplayListAdapter(this);
mDisplayList = (ListView)findViewById(R.id.display_list);
mDisplayList.setAdapter(mDisplayListAdapter);
mDisplayList.setOnItemClickListener(mOnItemClickListener);
mListView = (ListView)findViewById(R.id.display_list);
mListView.setAdapter(mDisplayListAdapter);
}
@Override
@@ -144,20 +151,50 @@ public class PresentationActivity extends Activity {
}
/**
* Shows a {@link Presentation} on the specified display, or dismisses it if one
* already showing there.
* Hides a {@link Presentation} on the specified display.
*/
private void showOrDismissPresentation(Display display) {
// Dismiss if already showing.
DemoPresentation presentation = mActivePresentations.get(display.getDisplayId());
private void hidePresentation(Display display) {
final int displayId = display.getDisplayId();
DemoPresentation presentation = mActivePresentations.get(displayId);
if (presentation != null) {
Log.d(TAG, "Dimissing presentation on display " + display.getDisplayId() + ".");
Log.d(TAG, "Dimissing presentation on display " + displayId + ".");
presentation.dismiss();
// presentation will be removed from mActivePresentations in onDismiss().
return;
}
}
// Otherwise show the presentation.
showPresentation(display);
@Override
/** Presentation CheckBox */
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
final Display display = (Display)buttonView.getTag();
if (isChecked) {
showPresentation(display);
} else {
hidePresentation(display);
}
}
@Override
/** Info Button */
public void onClick(View v) {
Context context = v.getContext();
AlertDialog.Builder builder = new AlertDialog.Builder(context);
final Display display = (Display)v.getTag();
Resources r = context.getResources();
AlertDialog alert = builder
.setTitle(r.getString(
R.string.presentation_alert_info_text, display.getDisplayId()))
.setMessage(display.toString())
.setNeutralButton(R.string.presentation_alert_dismiss_text,
new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
dialog.dismiss();
}
})
.create();
alert.show();
}
/**
@@ -203,9 +240,21 @@ public class PresentationActivity extends Activity {
@Override
public void onDismiss(DialogInterface dialog) {
DemoPresentation presentation = (DemoPresentation)dialog;
Display display = presentation.getDisplay();
Log.d(TAG, "Presentation on display " + display.getDisplayId() + " was dismissed.");
mActivePresentations.remove(display.getDisplayId());
int displayId = presentation.getDisplay().getDisplayId();
Log.d(TAG, "Presentation on display " + displayId + " was dismissed.");
mActivePresentations.remove(displayId);
// Uncheck the checkbox once removed.
final int numChildren = mListView.getChildCount();
for (int i = 0; i < numChildren; i++) {
CheckBox cb =
(CheckBox)mListView.getChildAt(i).findViewById(R.id.checkbox_presentation);
Display cbDisplay = (Display)cb.getTag();
if (cbDisplay.getDisplayId() == displayId) {
cb.setChecked(false);
break;
}
}
}
};
@@ -214,8 +263,39 @@ public class PresentationActivity extends Activity {
* Shows information about all displays.
*/
private final class DisplayListAdapter extends ArrayAdapter<Display> {
final Context mContext;
public DisplayListAdapter(Context context) {
super(context, android.R.layout.simple_list_item_1);
super(context, R.layout.presentation_list_item);
mContext = context;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
final View v;
if (convertView == null) {
v = ((Activity) mContext).getLayoutInflater().inflate(
R.layout.presentation_list_item, null);
} else {
v = convertView;
}
final Display display = getItem(position);
CheckBox cb = (CheckBox)v.findViewById(R.id.checkbox_presentation);
cb.setTag(display);
cb.setOnCheckedChangeListener(PresentationActivity.this);
onCheckedChanged(cb, cb.isChecked());
TextView tv = (TextView)v.findViewById(R.id.display_id);
tv.setText(v.getContext().getResources().getString(
R.string.presentation_display_id_text, display.getDisplayId()));
Button b = (Button)v.findViewById(R.id.info);
b.setTag(display);
b.setOnClickListener(PresentationActivity.this);
return v;
}
/**
@@ -235,19 +315,6 @@ public class PresentationActivity extends Activity {
}
}
/**
* Called when an item in the display list is clicked.
*
* Causes a presentation to be shown or dismissed on that display if already showing.
*/
private final OnItemClickListener mOnItemClickListener = new OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
Display display = (Display)parent.getItemAtPosition(position);
showOrDismissPresentation(display);
}
};
/**
* The presentation to show on the secondary display.
*
@@ -284,6 +351,20 @@ public class PresentationActivity extends Activity {
// Show a n image for visual interest.
ImageView image = (ImageView)findViewById(R.id.image);
image.setImageDrawable(r.getDrawable(CHANNELS[mChannelNumber]));
GradientDrawable drawable = new GradientDrawable();
drawable.setShape(GradientDrawable.RECTANGLE);
drawable.setGradientType(GradientDrawable.RADIAL_GRADIENT);
// Set the background to a random gradient.
Point p = new Point();
getDisplay().getSize(p);
drawable.setGradientRadius(Math.max(p.x, p.y) / 2);
drawable.setColors(new int[] {
((int) (Math.random() * Integer.MAX_VALUE)) | 0xFF000000,
((int) (Math.random() * Integer.MAX_VALUE)) | 0xFF000000
});
findViewById(android.R.id.content).setBackground(drawable);
}
}
}