[英]Android, XML view file and backend in Java, how can i create my custom view with backend java?
As we have main.xml file for view and another file java in src folder which contains the events, i have made another view, that onclicking a button in main.xml it will open the other view xml which should have a java backend file, when i create my custom view xml, then its backened file doesnot create, and how can i click a button and open a new view with another form, just like we do in web pages and how can our custom view have a java backend file. 由于我们有用于查看的main.xml文件和包含事件的src文件夹中的另一个文件java,所以我创建了另一个视图,单击main.xml中的按钮将打开另一个应具有Java后端文件的视图xml,当我创建自定义视图xml时,不会创建其备份文件,以及如何单击按钮并使用其他表单打开新视图,就像我们在网页中所做的一样,自定义视图如何具有Java后端文件。
Thanks Atif 谢谢阿蒂夫
XML FILES XML文件
firstXML.xml
secondXML.xml
FILES 档案
firstActivity.java
public class firstActivity extends Activity {
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.firstXML);
}
}
secondActivity.java
public class secondActivity extends Activity {
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.secondXML);
}
}
Now if you have Button in firstXML
. 现在,如果您在firstXML
具有Button 。 You want this Button to launch secondActivity: 您希望此按钮启动secondActivity:
firstActivity.java
public class firstActivity extends Activity {
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.firstXML);
final Button button = (Button) findViewById(R.id.button_id);
button.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
Intent myIntent = new Intent(firstActivity.this,secondActivity.class);
startActivityForResult(myIntent, 0);
}
});
}
}
Some extra notes: Now if you want firstActivity
to send some info to secondActivity
一些额外的注意事项:现在,如果您希望firstActivity
将一些信息发送给secondActivity
Change 更改
Intent myIntent = new Intent(firstActivity.this,secondActivity.class);
startActivityForResult(myIntent, 0);
to 至
Intent myIntent = new Intent(firstActivity.this,secondActivity.class);
Bundle muBundle = new Bundle(); //create a Bundle
myBundle.putString("username","Sherif");
myBundle.putInt("userid",1234);
// EXAMINE THE [Bundle Class][2]
myIntent.putExtras(myBundle); //PUT THE Bundle you created in the Intent
startActivityForResult(myIntent, 0);
To capture this data in the secondActivity
在secondActivity
捕获此数据
public class secondActivity extends Activity {
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.secondXML);
Bundle myBundle = this.getIntent().getExtras(); //You got the bundle
//TO USE THE BUNDLE
String A = myBundle.getString("username"); // A = "Sherif"
int B = myBundle.getInt("userid"); // B = 1234
}
}
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