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android 在两个Activity之间互传数据

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作者：用户投稿来源：网络发布时间： 12/10/19

新建工程：

public class Training_TransActivity extends Activity implements OnClickListener

2.定义widget

private EditText mText;
private Button mSend;
private String mString;

3.实现

mText=(EditText)findViewById(R.id.edit);
mText.setCursorVisible(false);
mSend=(Button)findViewById(R.id.send);
mSend.setOnClickListener(this);

4。定义另一个Activity

public class Jump extends Activity implements OnClickListener{
private TextView mDisplay;
private Button mBack;
Intent intent;
Bundle bundle;
@Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.activitytwo);

mDisplay=(TextView)findViewById(R.id.dis);
mBack=(Button)findViewById(R.id.back);
intent=this.getIntent();
bundle=intent.getExtras();
String textString=bundle.getString("text");
mDisplay.setText(textString);
mBack.setOnClickListener(this);
}
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
bundle.putBoolean("reply", true);
intent.putExtras(bundle);
this.setResult(1, intent);
this.finish();
}

}

5,原来Activity修改代码：

public void onClick(View v) {
// TODO Auto-generated method stub
if(v==mSend){
mString=mText.getText().toString();
Intent intent=new Intent();
Bundle bundle=new Bundle();
bundle.putString("text", mString);
intent.putExtras(bundle);
intent.setClass(this, Jump.class);
startActivityForResult(intent, 0);
}
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
// TODO Auto-generated method stub
super.onActivityResult(requestCode, resultCode, data);
switch (resultCode) {
case 1:
Bundle bundle=data.getExtras();
Boolean flag;
flag=bundle.getBoolean("reply");
if(flag == true){
mText.setText("the other received my data!");
}else if(flag ==false){
mText.setText("the other not received my data!!!");
}
break;
default:
break;
}
}