最近看到好幾個銀行類app，應用切出去之后會提示“XXX進入后臺運行”
API 14之后票编，Application可以注冊ActivityLifecycleCallbacks這個接口
application.registerActivityLifecycleCallbacks(new Application.ActivityLifecycleCallbacks() {
@Override
public void onActivityCreated(Activity activity, Bundle bundle) {
}
@Override
public void onActivityStarted(Activity activity) {
//說明從后臺回到了前臺
mFinalCount++;
}
@Override
public void onActivityResumed(Activity activity) {
}
@Override
public void onActivityPaused(Activity activity) {
}
@Override
public void onActivityStopped(Activity activity) {
mFinalCount--;
//說明從前臺回到了后臺
if (mFinalCount == 0 ) {
ToastTools.showShort(application.getApplicationContext(), "進入后臺運行");
}
}
@Override
public void onActivitySaveInstanceState(Activity activity, Bundle bundle) {
}
@Override
public void onActivityDestroyed(Activity activity) {
}
});
