[英]Showing Toast when clicking on textview
在此示例中,我嘗試單擊2個文本視圖(mLayout1 and mLayout2)
,然后將顯示一個祝酒詞。 該代碼編譯沒有錯誤,但是運行時沒有顯示吐司。
這是我的代碼:
public class MainActivity extends ActionBarActivity {
private TextView mLayout1, mLayout2;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
int id = item.getItemId();
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState)
{
View view = inflater.inflate(R.layout.activity_main,
mLayout1 = (TextView) view.findViewById(R.id.item_1a);
mLayout1.setOnClickListener(new OnClickListener()
{
@Override
public void onClick(View v) {
Toast.makeText(v.getContext(),"mLayout1 clicked",Toast.LENGTH_SHORT).show();
}
});
mLayout2 = (TextView) view.findViewById(R.id.item_1b);
mLayout2.setOnClickListener(new OnClickListener(){
@Override
public void onClick(View v) {
Toast.makeText(v.getContext(),"mLayout2 clicked",Toast.LENGTH_SHORT).show();
}
});
return view;
}
}
這是我的xml:
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
tools:context="com.example.transitionexample.MainActivity" >
<TextView
android:id="@+id/item_1a"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="Item 1a"
android:background="@color/green"
android:gravity="center"/>
<TextView
android:id="@+id/item_1b"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true"
android:layout_marginTop="74dp"
android:gravity="center"
android:background="@color/opaque_red"
android:text="Item 1b" />
</RelativeLayout>
嘗試這個:
android:clickable="true"
:
<TextView
android:clickable="true"
android:id="@+id/item_1a"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="Item 1a"
android:background="@color/green"
android:gravity="center"/>
您的onCreateView永遠不會被調用-這不是一個片段-添加@Override注解,您將看到...
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