import java.util.ArrayList;
import java.util.List;
import android.app.Activity;
import android.app.Application;
/** * 应用配置类
* @author leehongee
*
*/
public class AppManager extends Application{
/**打开的activity**/
private List<Activity> activities = new ArrayList<Activity>();
/**应用实例**/
private static AppManager instance;
/**
* 获得实例
* @return
*/
public static AppManager getInstance(){
return instance;
}
/**
* 新建了一个activity
* @param activity
*/
public void addActivity(Activity activity){
activities.add(activity);
}
/**
* 结束指定的Activity
* @param activity
*/
public void finishActivity(Activity activity){
if (activity!=null) {
this.activities.remove(activity);
activity.finish();
activity = null;
}
}
/**
* 应用退出，结束所有的activity
*/
public void exit(){
for (Activity activity : activities) {
if (activity!=null) {
activity.finish();
}
}
System.exit(0);
}
@Override
public void onCreate() {
instance = this;
}
} |
然后我写了一个BaseActivity，以后的Activity 都继承这个Activity，如下
import android.app.Activity;
import android.os.Bundle;
import android.os.StrictMode;
/** * 基本Activity
* @author leehongee
* @date 2013-1-26 下午6:24:47
* @version
*/
public class BaseActivity extends Activity{
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
//添加到Activity集合
AppManager.getInstance().addActivity(this);
//手机端SDK>10，即 android 2.3.x之后在主线程中访问网络需要加入如下代码
if (AppConfig.getSDKVersionNumber()>10) {
// 详见StrictMode文档
StrictMode.setThreadPolicy(new StrictMode.ThreadPolicy.Builder()
.detectDiskReads()
.detectDiskWrites()
.detectNetwork() // or .detectAll() for all detectable problems
.penaltyLog()
.build());
StrictMode.setVmPolicy(new StrictMode.VmPolicy.Builder()
.detectLeakedSqlLiteObjects()
.detectLeakedClosableObjects()
.penaltyLog()
.penaltyDeath()
.build());
}
}
@Override
public void onBackPressed() {
super.onBackPressed();
onDestroy();
}
@Override
protected void onDestroy() {
super.onDestroy();
//结束Activity&从集合中移除
AppManager.getInstance().finishActivity(this);
}
} |