com.chat.activity.BaseActivity.java Source code

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Here is the source code for com.chat.activity.BaseActivity.java

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/**
 * Copyright (C) 2013-2014 EaseMob Technologies. All rights reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *     http://www.apache.org/licenses/LICENSE-2.0
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.chat.activity;

import android.app.NotificationManager;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.support.v4.app.FragmentActivity;
import android.view.KeyEvent;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.Window;

import com.chat.Utils.ToastUtil;
import com.umeng.analytics.MobclickAgent;

public abstract class BaseActivity extends FragmentActivity implements OnClickListener {
    protected NotificationManager notificationManager;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        // TODO Auto-generated method stub
        super.onCreate(savedInstanceState);
        requestWindowFeature(Window.FEATURE_NO_TITLE);
        setOnCreate();
    }

    private void setOnCreate() {
        // TODO Auto-generated method stub
        setView();
        setDate();
        init();
        setOperation();
    }

    /**   */
    protected abstract void setView();

    /** ?  */
    protected abstract void setDate();

    /**   */
    protected abstract void init();

    /** ?  */
    protected abstract void setOperation();

    @Override
    protected void onResume() {
        super.onResume();
        // umeng
        MobclickAgent.onResume(this);
    }

    @Override
    protected void onStart() {
        super.onStart();
        // umeng
        MobclickAgent.onPause(this);
    }

    @Override
    public void onClick(View v) {
        // TODO Auto-generated method stub
    }

    // ????
    private static boolean isExit = false;

    Handler mHandler = new Handler() {

        @Override
        public void handleMessage(Message msg) {
            super.handleMessage(msg);
            isExit = false;
        }
    };

    @Override
    public boolean onKeyDown(int keyCode, KeyEvent event) {
        if (keyCode == KeyEvent.KEYCODE_BACK) {
            exit();
            return false;
        }
        return super.onKeyDown(keyCode, event);
    }

    /**
     * BACKonKeyDown?BACKexit
     * exitisExitfalse?true???20002???
     * Handler?false
     * ???2?BACK?exitisExittrue
     */
    public void exit() {
        if (!isExit) {
            isExit = true;
            ToastUtil.showToast(getApplicationContext(), "??");
            // handler????
            mHandler.sendEmptyMessageDelayed(0, 2000);
        } else {
            finish();
            System.exit(0);
        }
    }
}