传递ArrayList<String>
传递ArrayList<String>类型数据的方法
1）在创建的项目工程里面创建一个用来发送数据的SendActivity类，具体代码如下：
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package zjh.android.lx; import java.util.ArrayList;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
public class SendActivity extends Activity {
private Button send = null;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
super.setContentView(R.layout.activity_main);
this.send = (Button)super.findViewById(R.id.send);
this.send.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
ArrayList<String> info = new ArrayList<String>();
info.add("张三");
info.add("zhangsan");
info.add("22");
Intent intent = new Intent(SendActivity.this,ReceiveActivity.class);
//传递List<String>类型的数据
intent.putStringArrayListExtra("infolist", info);
startActivity(intent);
}
});
}
}
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2）创建一个用来接收SendActivity类发送过来数据的ReceiveActivity，其代码如下所示：
package zjh.android.lx;
import java.util.ArrayList;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.widget.TextView;
public class ReceiveActivity extends Activity {
private TextView show;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
super.setContentView(R.layout.receive);
this.show = (TextView)super.findViewById(R.id.show);
//取得Intent对象
Intent intent = super.getIntent();
ArrayList<String> infolist = new ArrayList<String>();
//接收发送过来的数据
infolist = intent.getStringArrayListExtra("infolist");
String name = infolist.get(0);
String password = infolist.get(1);
String age = infolist.get(2);
this.show.setText("name="+name+"\n"+"password="+password+"\n"+"age="+age);
}
}
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3）在AndroidMainfest.xml文件中添加相应的activity
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<activity android:name="zjha.android.lx.ReceiveActivity"/> |
此时，Intent传递ArrayList<String>类型数据的方法就实现了，当然也可以把ArrayList<String>中的String换成其它简单数据类型。