[英]How to make media player stop when pressing device back button from a fragment back to activity
[英]How to make back button from activity to fragment by using onOptionsItemSelected?
下面是我想從活動頁面返回到片段頁面的編碼:-
@Override
public boolean onOptionsItemSelected(MenuItem item)
{
int id = item.getItemId();
if(id == android.R.id.home)
{
startActivity(new Intent(TuitionPackageActivity.this, FilterTuitionCentreActivity.class));
}
return super.onOptionsItemSelected(item);
}
如下圖所示,這是當我單擊“后退”按鈕時發生的情況,這會花費一些時間並閃爍,但它會轉到我想要的片段頁面:
我正在使用此后退按鈕,如下圖所示:-
工具欄編碼如下:
mToolbar = (Toolbar) findViewById(R.id.parents_login_toolbar);
setSupportActionBar(mToolbar);
getSupportActionBar().setDisplayHomeAsUpEnabled(true);
getSupportActionBar().setDisplayShowHomeEnabled(true);
getSupportActionBar().setTitle("PARENTS LOGIN PAGE");
覆蓋onBackPressed方法,然后執行以下所需的操作
@Override
public void onBackPressed() {
super.onBackPressed();
//do what you want when back pressed
startActivity(new Intent(TuitionPackageActivity.this,FilterTuitionCentreActivity.class));
}
您需要在xml中添加帶有所需標題文本的自定義工具欄
<android.support.v7.widget.Toolbar
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:id="@+id/myToolbar">
<TextView
....
..../>
</android.support.v7.widget.Toolbar>
然后在您的活動中為該按鈕添加一個動作
Toolbar toolbar = view.findViewById(R.id.myToolbar);
//set backbutton
toolbar.setNavigationIcon(R.drawable.ic_back_button);
//set onClickListener for it
toolbar.setNavigationOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
onBackPressed();
}
});
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