Android 开发之 Activity 切换

核心提示：private Button btn;private Button btnClose;@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.

private Button btn;

private Button btnClose;

@Override

public void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.main);

btn=(Button)findViewById(R.id.btnNextView);

btn.setOnClickListener(new OnClickListener()

{

public void onClick(View v)

{

Intent itent=new Intent();

itent.setClass(ActivityChange.this, ActivitySecond.class);

startActivity(itent);

ActivityChange.this.finish();

}

});

btnClose=(Button)findViewById(R.id.btn_exit);

btnClose.setOnClickListener(new OnClickListener()

{

public void onClick(View v)

{

finish();

}

});

}

}

main.xml代码

< ?xml version="1.0" encoding="utf-8"? >

< LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"

android:orientation="vertical"

android:layout_width="fill_parent"

android:layout_height="fill_parent"

>

< TextView

android:layout_width="fill_parent"

android:layout_height="wrap_content"

android:text="@string/hello"

/ >

< Button

android:id="@+id/btnNextView"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:text="@string/show_next"

/ >

< Button

android:id="@+id/btn_exit"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:text="@string/btn_close"

/ >

< /LinearLayout >

AndroidManifest.xml代码

< ?xml version="1.0" encoding="utf-8"? >