1
当切换意图时，我失去了以前的onActivityResult数据我需要它保持它从用户获得的两个数字，目前它将保留一个数字，然后当下一个输入时丢失前一个，这里是代码：当转换意图时，我失去了数据
package com.eric.theworks;
import android.os.Bundle;
import android.app.Activity;
import android.content.Intent;
import android.view.Menu;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.TextView;
public class MainActivity extends Activity implements OnClickListener {
Button width, height, calc;
TextView area;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
width = (Button) findViewById(R.id.button1);
height = (Button) findViewById(R.id.button2);
calc = (Button) findViewById(R.id.button3);
area = (TextView) findViewById(R.id.textView1);
width.setOnClickListener(this);
height.setOnClickListener(this);
calc.setOnClickListener(this);
}
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
Intent i = new Intent(this, Numbers.class);
switch (v.getId()) {
case R.id.button1:
// width
i.putExtra("numbers", "width");
startActivityForResult(i, 1);
break;
case R.id.button2:
// height
i.putExtra("numbers", "height");
startActivityForResult(i, 1);
break;
case R.id.button3:
// calc
break;
}
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
// TODO Auto-generated method stub
super.onActivityResult(requestCode, resultCode, data);
if (data.getExtras().containsKey("widthInfo")){
width.setText(data.getStringExtra("widthInfo"));
}
if (data.getExtras().containsKey("heightInfo")){
height.setText(data.getStringExtra("heightInfo"));
}
}
}
package com.eric.theworks;
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;
public class Numbers extends Activity implements OnClickListener {
EditText number;
Button sendInfo;
@Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.numbers);
number = (EditText) findViewById(R.id.editText1);
sendInfo = (Button) findViewById(R.id.button1);
sendInfo.setOnClickListener(this);
}
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
String s = number.getText().toString();
Intent i = getIntent();
String msg = i.getStringExtra("numbers");
if (msg.contentEquals("width")) {
i.putExtra("widthInfo", s);
setResult(RESULT_OK, i);
finish();
}
if (msg.contentEquals("height")) {
i.putExtra("heightInfo", s);
setResult(RESULT_OK, i);
finish();
}
}
}
这种方法的工作，但由于某种原因，大干快上按钮2去掉文本，并使其空白（仍然可以使用），现在他们只是说“按钮”，但最终会改变。 – 2013-03-15 09:45:31
你可以做一件事。将resultCode的宽度和高度分别设置为1和1，然后在activityResult中根据resultCode分开上面的代码。开关（ResultCode）{案例1：{//宽度中断的代码;}案例2：{//代码的高度。打破;}} – KDeogharkar 2013-03-15 09:51:26
试试看.. – KDeogharkar 2013-03-15 09:52:23