Fragment与Activityz之间的传值

Fragment与Activityz之间的传值_第1张图片

1.在Activity中的相关监听事件


public void onclick(List showItems, int position) {
    Bundle bundle = new Bundle();
    bundle.putString("text","子条目显示的内容");
    startFragment(NewTweetFragment.class,"资讯详情",bundle);
}

2.利用反射将相关的信息传递

public class ShowActivity extends BaseActivity {

    @Bind(R.id.ll_show_main)
    LinearLayout mLlShowMain;
    private Class mClassname;
    private Bundle          mBundle;
    private boolean         mIsShowActionbar;
    private boolean         mIsArrow;
    private String          mTitle;


    @Override
    protected void onCreate(@Nullable Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_show);
        ButterKnife.bind(this);

        mClassname = (Class) getIntent().getSerializableExtra("classname");
        mBundle = getIntent().getBundleExtra("bundle");
        mIsShowActionbar = getIntent().getBooleanExtra("isShowActionbar", false);
        mIsArrow = getIntent().getBooleanExtra("isArrow", false);
        mTitle = getIntent().getStringExtra("title");
        int view = getIntent().getIntExtra("view", 0);
        if (view >  0) {
            View layout = View.inflate(getApplicationContext(), view, null);
            mLlShowMain.addView(layout,0);
        }






        init();
    }

    //初始化
    private void init() {

        try {

            Fragment tweetFragment = mClassname.newInstance();

            tweetFragment.setArguments(mBundle);

            getSupportFragmentManager().beginTransaction().replace(R.id.fl_show_show_layout, tweetFragment).commit();
        } catch (Exception e) {
            e.printStackTrace();
            System.out.println("请传入有效的fragment");
            finish();
        }


        //得到actionbar
        ActionBar supportActionBar = getSupportActionBar();

        if (mIsShowActionbar) {
            supportActionBar.show();//显示
        } else {
            supportActionBar.hide();//隐藏
        }

        if (mIsArrow) {
            supportActionBar.setDisplayHomeAsUpEnabled(true);
            supportActionBar.setDisplayShowHomeEnabled(true);
        }

        if (!TextUtils.isEmpty(mTitle)) {
            supportActionBar.setTitle(mTitle);
        }


    }

    //这个是标题栏的返回键设置的返回键
    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        switch (item.getItemId()) {
            case android.R.id.home:
                finish();

                break;

            default:
                break;

        }

        return super.onOptionsItemSelected(item);
    }

}
3.再Activity中的Frament中进行相关业务逻辑




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