activity 之间信息的传递 Intent 回调参数startActivityForResult

activity 中信息的传递

1，第一个Activity

Intent mintent = new Intent();

mintent.setClass(AddClockActivity.this, LabelEdit.class);

startActivityForResult(mintent, REQUSET_LABEL_EDIT); //REQUSET_LABEL_EDIT设置标示

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获取信息是onActivityResult：

/*requestCode 输出的标示

*resultCode 传入的标示

*data 传递的参数

*/

@override

protected void onActivityResult(int requestCode, int resultCode, Intent data) {

super.onActivityResult(requestCode, resultCode, data);

switch (requestCode) {

case REQUSET_LABEL_EDIT:

if (resultCode != RESULT_OK) {

return;

}

String labelEditString=data.getStringExtra("Label");

mLabel.setText(labelEditString);

default:

break;

}

}

2.第二个Activity

Intent mLabelIntent=new Intent(LabelEdit.this,AddClockActivity.class);

mLabelIntent.putExtra("Label", getLabel()); //传递的内容getLabel()；

setResult(RESULT_OK,mLabelIntent); //输出结果标示RESULT_OK