时间：2022-01-01 11:29:44 | 栏目：Android代码 | 点击：次
下面会讨论哪些代码应该放在BaseActivity里面，哪些需要谨慎
下面我贴一份我自己封装的BaseActivity，在代码中和代码下面做了解释：
public abstract class BaseActivity extends AppCompatActivity {
public Activity mActivity;
private Unbinder mUnbinder;
private static float sNoncompatDensity;
private static float sNoncompatScaledDensity;
private MaterialDialog mDialog;
@Override
protected void onCreate(@Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
onAdjustLayout();
setContentView(setContentLayout());
//这里的是初始化绑定ButterKnife，在onDestory做了销毁
mUnbinder = ButterKnife.bind(this);
this.mActivity = this;
//统一将一个activity添加到一个集合里面
AppManager.getInstance().addActivity(mActivity);
initToolBar();
initPresenter();
initData(savedInstanceState);
Log.e("app", this.getClass().getSimpleName() + "------onCreate");
}
@Override
protected void onStart() {
super.onStart();
Log.e("app", this.getClass().getSimpleName() + "------onStart");
}
@Override
protected void onRestoreInstanceState(Bundle savedInstanceState) {
super.onRestoreInstanceState(savedInstanceState);
Log.e("app", this.getClass().getSimpleName() + "------onRestoreInstanceState");
}
@Override
protected void onRestart() {
super.onRestart();
Log.e("app", this.getClass().getSimpleName() + "------onRestart");
}
@Override
protected void onResume() {
super.onResume();
Log.e("app", this.getClass().getSimpleName() + "------onResume");
}
@Override
protected void onSaveInstanceState(Bundle outState) {
super.onSaveInstanceState(outState);
Log.e("app", this.getClass().getSimpleName() + "------onSaveInstanceState");
}
@Override
protected void onPause() {
super.onPause();
Log.e("app", this.getClass().getSimpleName() + "------onPause");
}
@Override
protected void onStop() {
super.onStop();
Log.e("app", this.getClass().getSimpleName() + "------onStop");
}
@Override
protected void onDestroy() {
super.onDestroy();
onDestroyActivity();
mUnbinder.unbind();
Log.e("app", this.getClass().getSimpleName() + "------onDestroy");
}
/**
* 显示一个Fragment
*/
public void showFragment(Fragment fragment) {
if (fragment != null && fragment.isHidden()) {
FragmentTransaction fragmentTransaction = getSupportFragmentManager().beginTransaction();
fragmentTransaction.show(fragment);
fragmentTransaction.commit();
}
}
/**
* 隐藏一个Fragment
*/
public void hideFragment(Fragment fragment) {
if (fragment != null && !fragment.isHidden()) {
FragmentTransaction fragmentTransaction = getSupportFragmentManager().beginTransaction();
fragmentTransaction.hide(fragment);
fragmentTransaction.commit();
}
}
//这是一个设置toolbar标题栏的方法，ToolBarOptions类主要是持有一些id
public void setToolBar(int toolBarId, ToolBarOptions options) {
Toolbar toolbar = findViewById(toolBarId);
if (options.titleId != 0) {
toolbar.setTitle(options.titleId);
} else {
toolbar.setTitle("");
}
if (!TextUtils.isEmpty(options.titleString)) {
toolbar.setTitle(options.titleString);
}
if (options.backgroundColor != 0) {
toolbar.setBackgroundResource(options.backgroundColor);
}
if (options.logoId != 0) {
toolbar.setLogo(options.logoId);
}
setSupportActionBar(toolbar);
if (options.isNeedNavigate) {
toolbar.setNavigationIcon(options.navigateId);
toolbar.setContentInsetStartWithNavigation(0);
toolbar.setNavigationOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
if (!AppUtils.isNotFastClick()) {
return;
}
onNavigateUpClicked();
}
});
}
}
//子类直接调用展示toast
public void showToast(String s) {
ToastUtil.showToast(this, s);
}
//给子类提供一个获取activity对象的方式
public Activity getActivity() {
return this;
}
//一个弹窗loading库 github地址：
//implementation 'com.afollestad.material-dialogs:core:0.9.6.0'
public void showLoading(String loadDesc) {
mDialog = new MaterialDialog.Builder(this)
.progress(true, -1)
.content(loadDesc)
.canceledOnTouchOutside(false)
.cancelable(false)
.show();
}
public void showLoading(int resId) {
mDialog = new MaterialDialog.Builder(this)
.progress(true, -1)
.content(getString(resId))
.canceledOnTouchOutside(false)
.cancelable(false)
.show();
}
public void showLoading() {
mDialog = new MaterialDialog.Builder(this)
.progress(true, -1)
.content("加载中...")
.canceledOnTouchOutside(false)
.cancelable(false)
.show();
}
public void hideLoading() {
if (mDialog != null) {
mDialog.dismiss();
}
}
//这里是退出app相关的逻辑，可以根据自己的退出做具体的处理
public void exitLogin() {
SharedPreferenceUtils.getInstance(mActivity).put(Constant.KEY_LOGIN_TOKEN, "");
if (mDialog != null) {
mDialog.hide();
mDialog = null;
}
mDialog = new MaterialDialog.Builder(this)
.canceledOnTouchOutside(false)
.title("提示")
.content("账号已在其他地方登录，请退出重新登录！")
.positiveText("确定")
.onPositive(new MaterialDialog.SingleButtonCallback() {
@Override
public void onClick(@NonNull MaterialDialog dialog, @NonNull DialogAction which) {
AppManager.getInstance().finishAllActivity();
Intent intent = new Intent(mActivity, LoginActivity.class);
startActivity(intent);
finish();
}
}).show();
}
private void onNavigateUpClicked() {
onBackPressed();
}
//开始contentLayout前调整布局(子类若有需要可以单独复写)
public void onAdjustLayout() {
}
//下面这5个方法是子类必须实现的，分别是layout布局、toolbar、mvp的persenter初始化、
//onCreate内的initData、以及页面销毁的onDestroyActivity（可以根据自己的需要添加）
public abstract int setContentLayout();
public abstract void initToolBar();
public abstract void initPresenter();
public abstract void initData(Bundle savedInstanceState);
public abstract void onDestroyActivity();
}
不是很复杂，写的也比较详细，也基本适用于绝大部分的场景。可能还有其他需要注意的细节回头想起来再补上。