[automerger] Kill launcher when display size changes am: f2b97f8c

import android.content.Intent;

import android.content.IntentFilter;

import android.content.res.Configuration;

import android.graphics.Point;

import android.hardware.display.DisplayManager;

import android.hardware.display.DisplayManager.DisplayListener;

import android.os.Handler;

import android.util.Log;

import android.view.Display;

import android.view.WindowManager;

/**

 * {@link BroadcastReceiver} which watches configuration changes and

 * restarts the process in case changes which affect the device profile occur.

 */

public class ConfigMonitor extends BroadcastReceiver {

public class ConfigMonitor extends BroadcastReceiver implements DisplayListener {

    private static final String TAG = "ConfigMonitor";

    private final Point mTmpPoint1 = new Point();

    private final Point mTmpPoint2 = new Point();

    private final Context mContext;

    private final float mFontScale;

    private final int mDensity;

    private final int mDisplayId;

    private final Point mRealSize;

    private final Point mSmallestSize, mLargestSize;

    public ConfigMonitor(Context context) {

        mContext = context;

        Configuration config = context.getResources().getConfiguration();

        mFontScale = config.fontScale;

        mDensity = config.densityDpi;

        Display display = getDefaultDisplay(context);

        mDisplayId = display.getDisplayId();

        mRealSize = new Point();

        display.getRealSize(mRealSize);

        mSmallestSize = new Point();

        mLargestSize = new Point();

        display.getCurrentSizeRange(mSmallestSize, mLargestSize);

    }

    @Override

    public void onReceive(Context context, Intent intent) {

        Configuration config = context.getResources().getConfiguration();

        if (mFontScale != config.fontScale || mDensity != config.densityDpi) {

            Log.d("ConfigMonitor", "Configuration changed, restarting launcher");

            mContext.unregisterReceiver(this);

            android.os.Process.killProcess(android.os.Process.myPid());

            Log.d(TAG, "Configuration changed");

            killProcess();

        }

    }

    public void register() {

        mContext.registerReceiver(this, new IntentFilter(Intent.ACTION_CONFIGURATION_CHANGED));

        mContext.getSystemService(DisplayManager.class)

                .registerDisplayListener(this, new Handler(UiThreadHelper.getBackgroundLooper()));

    }

    @Override

    public void onDisplayAdded(int displayId) { }

    @Override

    public void onDisplayRemoved(int displayId) { }

    @Override

    public void onDisplayChanged(int displayId) {

        if (displayId != mDisplayId) {

            return;

        }

        Display display = getDefaultDisplay(mContext);

        display.getRealSize(mTmpPoint1);

        if (!mRealSize.equals(mTmpPoint1) && !mRealSize.equals(mTmpPoint1.y, mTmpPoint1.x)) {

            Log.d(TAG, String.format("Display size changed from %s to %s", mRealSize, mTmpPoint1));

            killProcess();

            return;

        }

        display.getCurrentSizeRange(mTmpPoint1, mTmpPoint2);

        if (!mSmallestSize.equals(mTmpPoint1) || !mLargestSize.equals(mTmpPoint2)) {

            Log.d(TAG, String.format("Available size changed from [%s, %s] to [%s, %s]",

                    mSmallestSize, mLargestSize, mTmpPoint1, mTmpPoint2));

            killProcess();

        }

    }

    private void killProcess() {

        Log.d(TAG, "restarting launcher");

        mContext.unregisterReceiver(this);

        mContext.getSystemService(DisplayManager.class).unregisterDisplayListener(this);

        android.os.Process.killProcess(android.os.Process.myPid());

    }

    private Display getDefaultDisplay(Context context) {

        return context.getSystemService(WindowManager.class).getDefaultDisplay();

    }

}