MainActivity.java和OtherActivity.java的相互调用
首先MainActivity.java是Android程序自带的，新建一个类OtherActiviy extends Activity,添加OtherActivity的onCreate方法。
将OtherActivity在AndroidManifest.xml中注册：<activity android:name=".OtherActivity" android:label="zhanglei"></activity>
新建一个.xml文件用于给OtherActivity添加布局文件，命名为other.xml.
activity_main.xml文件中有两个Button按钮：
<Button
android:id="@+id/myButton"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_alignLeft="@+id/textView1"
android:layout_below="@+id/textView1"
android:text="跳转" />
<Button
android:id="@+id/sendMessage"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_below="@id/myButton"
android:text="发短信"/>
MainActiv.java中代码如下:
private Button myButton = null; //跳转按钮
private Button sendMessage = null; //发送短信按钮
myButton = (Button)findViewById(R.id.myButton);
myButton.setOnClickListener(new ButtonListener());
sendMessage = (Button)findViewById(R.id.sendMessage);
sendMessage.setOnClickListener(new SendMessageListener());
监听器如下:
class SendMessageListener implements OnClickListener{
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
Uri uri = Uri.parse("smsto://0800000123");
Intent intent = new Intent(Intent.ACTION_SENDTO,uri);
intent.putExtra("sms_body", "The SMS text");
startActivity(intent);
}
}
class ButtonListener implements OnClickListener{
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
Intent intent = new Intent();
intent.putExtra("textIntent", "123");
//第一个参数是当前Activity，第二个参数是跳转到的Activity
intent.setClass(MainActivity.this, OtherActivity.class);
MainActivity.this.startActivity(intent);
}
}
OtherAcvitivity.java代码如下:
textView = (TextView)findViewById(R.id.myTextView);
Intent intent = getIntent();
String value = intent.getStringExtra("textIntent");
textView.setText(value);