assistant-android/app/src/main/java/com/gh/gamecenter/NormalActivity.java

package com.gh.gamecenter;

import android.content.Context;
import android.content.Intent;
import android.os.Bundle;
import android.text.TextUtils;
import android.view.MenuItem;
import android.view.MotionEvent;

import com.gh.base.ToolBarActivity;
import com.gh.gamecenter.normal.NormalFragment;

import androidx.fragment.app.Fragment;

/**
 * Created by khy on 17/10/17.
 */

public abstract class NormalActivity extends ToolBarActivity {

    private Fragment mTargetFragment;

    public static final String NORMAL_FRAGMENT_NAME = "normalFragmentName";
    public static final String NORMAL_FRAGMENT_BUNDLE = "normalFragmentBundle";

    // 针对部分跳转不符合NormalActivity规则的额外处理，主要绑定NormalFragment
    protected Intent provideNormalIntent() {
        return null;
    }

    protected static Intent getTargetIntent(Context context, Class<? extends NormalActivity> cls, Class<? extends NormalFragment> t, Bundle bundle) {
        Intent intent = new Intent(context, cls);
        intent.putExtra(NORMAL_FRAGMENT_NAME, t.getCanonicalName());
        intent.putExtra(NORMAL_FRAGMENT_BUNDLE, bundle);
        return intent;
    }

    protected static Intent getTargetIntent(Context context, Class<? extends NormalActivity> cls, Class<? extends NormalFragment> t) {
        Intent intent = new Intent(context, cls);
        intent.putExtra(NORMAL_FRAGMENT_NAME, t.getCanonicalName());
        return intent;
    }


    public static void startFragmentNewTask(Context context, Class<? extends NormalFragment> t, Bundle bundle) {
        Intent intent = new Intent(context, NormalActivity.class);
        intent.putExtra(NORMAL_FRAGMENT_NAME, t.getCanonicalName());
        intent.putExtra(NORMAL_FRAGMENT_BUNDLE, bundle);
        intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
        context.startActivity(intent);
    }

    public static void startFragment(Context context, Class<? extends NormalFragment> t, Bundle bundle) {
        Intent intent = new Intent(context, NormalActivity.class);
        intent.putExtra(NORMAL_FRAGMENT_NAME, t.getCanonicalName());
        intent.putExtra(NORMAL_FRAGMENT_BUNDLE, bundle);
        context.startActivity(intent);
    }


    @Override
    protected int getLayoutId() {
        return R.layout.activity_normal;
    }

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        if (getIntent() != null) {
            if (savedInstanceState == null) {
                handleIntent(getIntent());
            } else {
                for (Fragment fragment : getSupportFragmentManager().getFragments()) {
                    if (fragment instanceof NormalFragment) mTargetFragment = fragment;
                }
            }
        }
    }

    @Override
    protected void onNewIntent(Intent intent) {
        super.onNewIntent(intent);
        if (getIntent() != null) handleIntent(intent);
    }

    private void handleIntent(Intent intent) {
        String fraName = intent.getStringExtra(NORMAL_FRAGMENT_NAME);
        Bundle bundle = intent.getBundleExtra(NORMAL_FRAGMENT_BUNDLE);
        if (TextUtils.isEmpty(fraName)) {
            if (provideNormalIntent() == null) {
                return;
            }
            fraName = provideNormalIntent().getStringExtra(NORMAL_FRAGMENT_NAME);
            if (bundle == null) bundle = getIntent().getExtras();
            if (TextUtils.isEmpty(fraName)) return;
        }
        mTargetFragment = getSupportFragmentManager().findFragmentByTag(fraName);
        if (mTargetFragment == null) {
            mTargetFragment = Fragment.instantiate(this, fraName, bundle);
        }
        getSupportFragmentManager().beginTransaction().replace(getFragmentPlaceholderId(), mTargetFragment, fraName).commitNowAllowingStateLoss();
    }

    @Override
    public boolean onMenuItemClick(MenuItem item) {
        if (mTargetFragment instanceof NormalFragment) {
            ((NormalFragment) mTargetFragment).onMenuItemClick(item);
        }
        return super.onMenuItemClick(item);
    }

    @Override
    public void onBackPressed() {
        if (mTargetFragment instanceof NormalFragment
                && mTargetFragment.isAdded()
                && !((NormalFragment) mTargetFragment).onBackPressed()) {
            super.onBackPressed();
        }
    }

    @Override
    public boolean dispatchTouchEvent(MotionEvent ev) {
        if (mTargetFragment instanceof NormalFragment) {
            ((NormalFragment) mTargetFragment).onTouchEvent(ev);
        }
        return super.dispatchTouchEvent(ev);
    }

    public Fragment getTargetFragment() {
        return mTargetFragment;
    }

    public int getFragmentPlaceholderId() {
        return R.id.normal_content;
    }
}