我如何获得可读 specyfic布局的ID?
我的活动的片段_miejsce.xml文件:
<LinearLayout
android:id="@+id/elementPlace"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:background="@drawable/layout_main_menu_selector"
android:clickable="true"
android:onClick="Place">
...
</LinearLayout>
此布局的活动:
public class PlacesActivity extends AppCompatActivity {
LinearLayout element;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_places);
element = (LinearLayout) findViewById(R.id.elementPlace);
}
public void Place(android.view.View v){
Intent place = new Intent(this, Miejsce.class);
place.putExtra("source", element.toString());
startActivity(place);
}}
miejsce.java(我们意图的目的地):
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_miejsce);
Intent src = getIntent();
String source = src.getStringExtra("source");
TextView msg = (TextView) findViewById(R.id.napis);
msg.setText(getIntent().getStringExtra("source"));
Toast.makeText(getApplicationContext(), "Source: " + source, Toast.LENGTH_SHORT).show();
}
结果(来自吐司):来源:android.widget.linearlayout {14E02738 V.E ... c。... P .... 0,165-1080,375#7F0C007E应用:ID/ElementPlace}
我想使用SpecyFic布局的ID,因为Miejsce.java将生成一个依赖源的布局。例如:有3种布局(酒店,汽油站,餐厅)。用户单击了其中一个(@ ID/餐厅),并以源ID(触发器)发送了意图。Java代码与餐厅生成了特定的布局。
我会说,因为您已经知道ID名称,你可以做类似的事情字符串id_name =" r.id.id_name"并通过您的意图传递。
感谢您的链接@jackowski。更改后的placeActivity.java:
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_places);
}
public void Place(android.view.View v){
switch(v.getId()){
case R.id.elementPlace:
Intent place = new Intent(this, Place.class);
place.putExtra("source", "elementPlace");
startActivity(place);
break;
}
}