Android Open Source - BtDemo Base Binder Activity

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Back to project page BtDemo.

License

The source code is released under:

Apache License

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Java Source Code

package cn.edu.hust.cm.bt.demo;
//ww  w  . j a v  a  2s.  c  om
import android.app.Activity;
import android.content.ComponentName;
import android.content.Context;
import android.content.Intent;
import android.content.ServiceConnection;
import android.os.Bundle;
import android.os.IBinder;
import android.util.Log;

public abstract class BaseBinderActivity extends Activity {

    public static final String TAG = "BaseBinderActivity";

    protected boolean mIsBound;
    protected BaseBinderService mService;
    protected ServiceConnection mConn;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
    }

    @Override
    protected void onDestroy() {
        super.onDestroy();
        doUnbind();
    }

    public boolean doBind(Intent service) {
        if (!mIsBound) {
            return bindService(service, getServiceConnection0(),
                    Context.BIND_AUTO_CREATE);
        }
        return mIsBound;
    }

    /**
     * Already called in onDestroy to prevent ServiceConnection leaked
     */
    public void doUnbind() {
        if (mIsBound) {
            Log.i(TAG, "unbind " + mConn);
            unbindService(getServiceConnection0());
        }
    }

    /**
     * We can do something after ServiceConnection established
     */
    protected void postConnected() {

    }

    private ServiceConnection getServiceConnection0() {
        if (null == mConn) {
            mConn = getServiceConnection();
            if (null == mConn) {
                // if there is no customized ServiceConnection, use the default one instead
                mConn = getDefaultServiceConnection();
            }
        }
        return mConn;
    }

    /**
     * Customized ServiceConnection provided here
     * @return
     */
    protected ServiceConnection getServiceConnection() {
        return null;
    }

    private ServiceConnection getDefaultServiceConnection() {
        return new ServiceConnection() {

            @Override
            public void onServiceDisconnected(ComponentName name) {
                mService = null;
                mIsBound = false;
            }

            @Override
            public void onServiceConnected(ComponentName name, IBinder service) {
                mIsBound = true;
                mService = ((LocalBinder) service).getService();
                postConnected();
            }
        };
    }

}

Java Source Code List