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android利用startActivityForResult()方法得到另一个Activity的返回值
来源:互联网   发布日期:2016-01-14 10:53:06   浏览:1516次  

导读:第一个Activity[java]package yyy.testandroid5;椀洀瀀漀爀琀 android.app.Activity;椀洀瀀漀爀琀 android.con...

第一个Activity

[java]

package yyy.testandroid5;

import android.app.Activity;

import android.content.ComponentName;

import android.content.Intent;

import android.os.Bundle;

import android.view.View;

import android.view.View.OnClickListener;

import android.widget.Button;

import android.widget.EditText;

public class TestAndroid5Activity extends Activity {

private EditText edit;

private Button button;

/** Called when the activity is first created. */

@Override

public void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.main);

edit = (EditText) findViewById(R.id.edit);

button = (Button) findViewById(R.id.button);

button.setOnClickListener(new OnClickListener() {

@Override

public void onClick(View arg0) {

// TODO Auto-generated method stub

//打开第二个Activity

Intent intent = new Intent();

intent.setComponent(new ComponentName("yyy.testandroid6", "yyy.testandroid6.TestAndroid6Activity"));

intent.setAction(Intent.ACTION_VIEW);

intent.putExtra("test", edit.getText().toString());

startActivityForResult(intent, 0);

}

});

}

@Override

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

// TODO Auto-generated method stub

super.onActivityResult(requestCode, resultCode, data);

if(requestCode == 0){

edit.setText(data.getStringExtra("return"));

}

}

}

第二个Activity

[java]

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;

import android.widget.EditText;

import android.widget.TextView;

public class TestAndroid6Activity extends Activity {

private TextView text;

private EditText edit;

private Button button;

/** Called when the activity is first created. */

@Override

public void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.main);

edit = (EditText) findViewById(R.id.edit);

button = (Button) findViewById(R.id.button);

String str = getIntent().getStringExtra("test");

edit.setText(str);

button.setOnClickListener(new OnClickListener() {

@Override

public void onClick(View arg0) {

// TODO Auto-generated method stub

//添加给第一个Activity的返回值,并设置resultCode

Intent intent = new Intent();

intent.putExtra("return", edit.getText().toString());

setResult(RESULT_OK, intent);

finish();

}

});

}

}

摘自 Central-Perk的专栏

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