android activity自定义抽象父类

最新推荐文章于 2025-01-24 16:52:42 发布

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#android #android开发 #activity

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本文介绍如何在Android开发中创建一个名为BaseActivity的自定义抽象父类，旨在简化activity的创建流程。通过继承BaseActivity，子活动将自动获得一些预设方法和界面转场动画，如界面跳转动画等公共效果。

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android开发最常用的组件就是activity，但是activity中也有很多常用的方法，几乎每次建立activity后都需要调用的一些方法流程，在此自定义一个父类-BaseActivity，使所有的activity都继承于这个父类，继承以后会自动继承父类的方法，并集成了一些界面跳转动画等公共效果，
BaseActivity.java

public abstract class BaseActivity extends AppCompatActivity {
    protected Context mContext;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView();
        setContentView(R.layout.activity_base_layout);
        initParent();
        findViews();
        setListensers();
        MyApplication myApplication = (MyApplication) getApplication();
        myApplication.addTempActivityInBackStack(this);
    }

    @Override
    protected void onActivityResult(int arg0, int arg1, Intent arg2) {
        // TODO Auto-generated method stub
        super.onActivityResult(arg0, arg1, arg2);
    }

    private void initParent() {
        mContext = this;
        LinearLayout subCententView = (LinearLayout) this.findViewById(R.id.base_sub_activty_layout);
        LayoutParams layoutParams = new LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT,
                ViewGroup.LayoutParams.MATCH_PARENT);
        View centerView = View.inflate(mContext, setContentView(), null);
        subCententView.addView(centerView, layoutParams);
    }

    protected boolean isShowNoNetworksPrompt() {
        return true;
    }


    /**
     * 跳转到某个Activity
     */
    protected void gotoActivity(Context mContext, Class<?> toActivityClass, Bundle bundle) {
        Intent intent = new Intent(mContext, toActivityClass);
        if (bundle != null) {
            intent.putExtras(bundle);
        }
        mContext.startActivity(intent);
        ((Activity) mContext).overridePendingTransition(R.anim.push_right_in, R.anim.not_exit_push_left_out);//页面跳转动画
    }


    /**
     * 退出到某个Activity
     */
    protected void backActivity() {
        finish();
        overridePendingTransition(R.anim.not_exit_push_left_in, R.anim.push_right_out);//页面退出动画
    }

    @Override
    public boolean onKeyDown(int keyCode, KeyEvent event) {
        // 所有需要统一处理的onKeyDown写在这个if里面
        if (isOnKeyDown()) {
            if (keyCode == KeyEvent.KEYCODE_BACK) {
                backActivity();
            }
        }
        return super.onKeyDown(keyCode, event);
    }

    protected boolean isOnKeyDown() {
        return true;
    }

    /**
     * 加载子类布局
     */
    protected abstract int setContentView();

    /**
     * 加载控件
     */
    protected abstract void findViews();

    /**
     * 设置监听
     */
    protected abstract void setListensers();

    @Override
    protected void onResume() {
        super.onResume();
        MyApplication myApplication = (MyApplication) getApplication();
        myApplication.setResumeContext(this);
        if (JPushInterface.isPushStopped(getApplicationContext())) {
            JPushInterface.resumePush(getApplicationContext());
        }
    }
}

activity_base_layout.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent" >

    <LinearLayout
        android:id="@+id/base_sub_activty_layout"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:background="@android:color/transparent"
        android:orientation="vertical" >
    </LinearLayout>

</RelativeLayout>

not_exit_push_left_in.xml

<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android" >

    <translate
        android:duration="300"
        android:fromXDelta="0%p"
        android:interpolator="@android:anim/linear_interpolator"
        android:toXDelta="0%p" />

</set>

not_exit_push_left_out.xml

<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android" >

    <translate
        android:duration="300"
        android:fromXDelta="0%p"
        android:interpolator="@android:anim/linear_interpolator"
        android:toXDelta="0%p" />

</set>

push_right_in.xml

<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android" >

    <translate
        android:duration="300"
        android:fromXDelta="100%p"
        android:interpolator="@android:anim/linear_interpolator"
        android:toXDelta="0%p" />

</set>

push_right_out.xml

<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android" >

    <translate
        android:duration="300"
        android:fromXDelta="0%p"
        android:interpolator="@android:anim/linear_interpolator"
        android:toXDelta="100%p" />
</set>