前提是我在android下开发新功能,正如我在主题上写的那样,我在活动之后遇到了问题: http://oi62.tinypic.com/s1rqzl.jpg
这是我用来启动它的代码:
public void connect(View view){
Intent intent = new Intent(this, MyNewActivity.class);
startActivity(intent);
}
这是与按钮的onClick事件相关联的方法。 如果有人能解释我的错误,我将不胜感激,谢谢!
这是MainActivity类:
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
public class MainActivity extends Activity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}
public void connect(View view){
Intent intent = new Intent(this, MyNewActivity.class);
startActivity(intent);
}
}
这是MyNewActivity类:
import android.app.Activity;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
public class MyNewActivity extends Activity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_my_new);
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.my_new, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
}
MainActivity的xml:
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@drawable/grey1">
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="60dp"
android:layout_alignParentTop="true"
android:background="@drawable/back"
android:id="@+id/layout_titolo">
<ImageView
android:layout_width="230dp"
android:layout_height="60dp"
android:src="@drawable/logo"
android:id="@+id/titolo_imageview"/>
</LinearLayout>
<RelativeLayout
android:layout_width="fill_parent"
android:layout_height="50dp"
android:layout_alignParentBottom="true"
android:background="@drawable/grey2">
<Button
android:layout_width="120dp"
android:layout_height="40dp"
android:text="Connetti"
android:background="@drawable/back_button"
android:layout_centerInParent="true"
android:textColor="#c9ffffff"
android:textSize="20dp"
android:onClick="connect"/>
</RelativeLayout>
<EditText
android:layout_width="250dp"
android:layout_height="wrap_content"
android:id="@+id/nickname"
android:cursorVisible="true"
android:textColor="#c9ffffff"
android:background="@drawable/linea"
android:hint="Inserisci il nickname"
android:textSize="22dp"
android:layout_above="@+id/server"
android:layout_alignStart="@+id/server"
android:maxLines="1"/>
<EditText
android:layout_width="250dp"
android:layout_height="wrap_content"
android:id="@+id/server"
android:textColor="#c9ffffff"
android:background="@drawable/linea"
android:hint="Inserisci il server"
android:textSize="22dp"
android:layout_centerVertical="true"
android:layout_alignStart="@+id/canale"
android:maxLines="1"/>
<EditText
android:layout_width="250dp"
android:layout_height="wrap_content"
android:id="@+id/canale"
android:textColor="#c9ffffff"
android:background="@drawable/linea"
android:hint="Inserisci il canale"
android:textSize="22dp"
android:layout_below="@+id/server"
android:layout_centerHorizontal="true"
android:maxLines="1"/>
</RelativeLayout>
最后是MyNewActivity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:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
android:paddingBottom="@dimen/activity_vertical_margin"
tools:context="com.example.andrea.myapplication.MyNewActivity">
<TextView
android:text="@string/hello_world"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
</RelativeLayout>
我希望它会有所帮助!
答案 0 :(得分:0)
非常感谢,我找到了解决方案。不知怎的,编辑器搞砸了,因为只要我删除了xml布局文件并重新制作了一个新文件(与前一个完全相同),它就完美了。我正在使用android studio。
迎接