package gale.activity03;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;
//上面多的包不管
public class Acitivity03 extends Activity {
/** Called when the activity is first created. */ @Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
factorOne=(EditText)findViewById(R.id.factorOne);
factorTwo=(EditText)findViewById(R.id.factorTwo);
calculate=(Button)findViewById(R.id.calculate);
symbol=(TextView)findViewById(R.id.symbol); symbol.setText(R.string.symbol);
calculate.setText(R.string.calculate);
}
}
谁可以帮我看看这段是哪儿的问题 我怎么看都不知道是哪儿的问题
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;
//上面多的包不管
public class Acitivity03 extends Activity {
/** Called when the activity is first created. */ @Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
factorOne=(EditText)findViewById(R.id.factorOne);
factorTwo=(EditText)findViewById(R.id.factorTwo);
calculate=(Button)findViewById(R.id.calculate);
symbol=(TextView)findViewById(R.id.symbol); symbol.setText(R.string.symbol);
calculate.setText(R.string.calculate);
}
}
谁可以帮我看看这段是哪儿的问题 我怎么看都不知道是哪儿的问题
定义了的,
没有这两行都没问题
symbol.setText(R.string.symbol);
calculate.setText(R.string.calculate);
就是一个简单的Acitivity 居然不行 哎 实在不知道哪儿的问题 我把代码全贴上吧
package gale.activity03;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 Acitivity03 extends Activity {
/** Called when the activity is first created. */
private Button calculate;
private EditText factorOne;
private EditText factorTwo;
private TextView symbol; @Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
factorOne=(EditText)findViewById(R.id.factorOne);
factorTwo=(EditText)findViewById(R.id.factorTwo);
calculate=(Button)findViewById(R.id.calculate);
symbol=(TextView)findViewById(R.id.symbol); //symbol.setText("乘以");
//calculate.setText("计算");
symbol.setText(R.string.symbol);
calculate.setText(R.string.calculate);
//将监听器绑定到按钮对象上
calculate.setOnClickListener(new CalculateListener());
}
class CalculateListener implements OnClickListener{ @Override
public void onClick(View v) {
//取得两个EditText控件的值
String factorOneStr = factorOne.getText().toString();
String factorTwoStr = factorTwo.getText().toString();
//将这两个值存放到Intent对象当中
Intent intent=new Intent();
intent.putExtra("one", factorOneStr);
intent.putExtra("two", factorTwoStr);
intent.setClass(Acitivity03.this, ResaultActivity.class);
//最后引用这个Intent的值来启动ResaultActivity
Acitivity03.this.startActivity(intent);
}
}
}就是设置symbol显示,随便怎么就有问题、
//symbol.setText("乘以");
//calculate.setText("计算");
factorOne=(EditText)findViewById(R.id.factorOne);
factorTwo=(EditText)findViewById(R.id.factorTwo);
calculate=(Button)findViewById(R.id.calculate);
symbol=(TextView)findViewById(R.id.symbol);改为EditText factorOne = (EditText)findViewById(R.id.factorOne);
EditText factorTwo = (EditText)findViewById(R.id.factorTwo);
Button calculate = (Button)findViewById(R.id.calculate);
TextView symbol = (TextView)findViewById(R.id.symbol);
你把打印信息发出来看看吧
嗯 晚上回去就发给你帮我看看。
我也觉得是没问题,昨晚整到3点,我把之前的Acivity02的复制出来改就行、我自己写就又还是这样。你帮我分析下是什么问题。郁闷得我哦 蛋都要疼碎了,今天还一大早起来上班
{
public boolean onKey(View arg0, int arg1, KeyEvent arg2) {
mEmail = mEmailET.getText().toString();
return false;
}
});
哎 我蛋都要疼碎了,就是我在控件.setText()这步就会出问题。不设置控件的显示文本就没问题,设置了一运行就11-02 11:14:54.199: E/dalvikvm(352): Unable to open stack trace file '/data/anr/traces.txt': Permission denied
出现这个
Unable to open stack trace file '/data/anr/traces.txt': Permission denied
//将监听器绑定到按钮对象上
calculate.setOnClickListener(new CalculateListener());
改为
calculate.setOnClickListener(this);
就可以了。
package com.zhoujl.android.calculator;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 CalculatorAvtivity extends Activity {
private EditText et1,et2;
private TextView tv1;
private Button button;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
findViewById();
setListener();
}
private void findViewById() {
et1 = (EditText)findViewById(R.id.et1);
et2 = (EditText)findViewById(R.id.et2);
button = (Button)findViewById(R.id.button1);
}
private void setListener() {
button.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
String number1 = et1.getText().toString().trim();
String number2 = et2.getText().toString().trim();
Intent intent = new Intent();
intent.setClass(CalculatorAvtivity.this, Result.class);
intent.putExtra("number1", number1);
intent.putExtra("number2", number2);
startActivity(intent);
}
});
}
}
Result.java
package com.zhoujl.android.calculator;import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.widget.TextView;public class Result extends Activity { TextView tv;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.result);
tv = (TextView)findViewById(R.id.tv);
Intent intent = getIntent();
float number1 = Float.parseFloat(intent.getStringExtra("number1"));
float number2 = Float.parseFloat(intent.getStringExtra("number2"));
tv.setText("结果是"+(number1+number2));
}
}
main.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
>
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="@string/hello"
/>
<EditText android:id="@+id/et1"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
/>
<EditText android:id="@+id/et2"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
/>
<TextView android:id="@+id/tv1"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="@string/cal"
/>
<Button android:id="@+id/button1"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="@string/button"
/>
</LinearLayout>result.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="wrap_content"
android:layout_height="wrap_content">
<TextView android:id="@+id/tv"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
/>
</LinearLayout>AndroidManifest.xml
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.zhoujl.android.calculator"
android:versionCode="1"
android:versionName="1.0">
<application android:icon="@drawable/icon" android:label="@string/app_name">
<activity android:name=".CalculatorAvtivity"
android:label="@string/app_name">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity android:name=".Result">
</activity>
</application>
<uses-sdk android:minSdkVersion="8" /></manifest> strings.xml
<?xml version="1.0" encoding="utf-8"?>
<resources>
<string name="hello">Hello World, CalculatorAvtivity!</string>
<string name="app_name">Calculator</string>
<string name="cal">加</string>
<string name="button">计算</string>
</resources>
Activity03
package gale.activity03;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 Activity03 extends Activity {
/** Called when the activity is first created. */
private Button calculate;
private TextView symbol;
private EditText factorOne;
private EditText factorTwo;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
factorOne=(EditText)findViewById(R.id.factorOne);
symbol=(TextView)findViewById(R.id.symbol);
factorTwo=(EditText)findViewById(R.id.factorTwo);
calculate=(Button)findViewById(R.id.calculate);
//calculate.setText(R.string.calculate);
//symbol.setText(R.string.symbol);
calculate.setOnClickListener(new CalculateListener());
}
class CalculateListener implements OnClickListener{ @Override
public void onClick(View v) {
// TODO Auto-generated method stub
Intent intent=new Intent();
String factorOneStr=factorOne.getText().toString();
String factorTwoStr=factorTwo.getText().toString();
intent.putExtra("one", factorOneStr);
intent.putExtra("Two", factorTwoStr);
intent.setClass(Activity03.this, Result.class);
Activity03.this.startActivity(intent);
}
}
}strings.xml
<?xml version="1.0" encoding="utf-8"?>
<resources> <string name="hello">Hello World, Activity03!</string>
<string name="app_name">Activity03</string>
<string name="symbol">乘以</string>
<string name="calculate">计算</string></resources>main.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" > <EditText
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="@+id/factorOne" />
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="@+id/symbol" />
<EditText
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="@+id/factorTwo" />
<Button
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="@+id/calculate" /></LinearLayout>Resultpackage gale.activity03;import gale.activity03.R;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.widget.TextView;public class Result extends Activity {
/** Called when the activity is first created. */
private TextView resultView;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.result);
resultView=(TextView)findViewById(R.id.result);
Intent intent=getIntent();
String factorOneStr=intent.getStringExtra("one");
String factorTwoStr=intent.getStringExtra("two");
int factorOne=Integer.parseInt(factorOneStr);
int factorTwo=Integer.parseInt(factorTwoStr);
int result=factorOne*factorTwo;
resultView.setText(result+"");
}}
result.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="@+id/result" /></LinearLayout>
应该发完的吧?我实在欲哭无泪了
AndroidManifest.xml
Java code
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="gale.activity03"
android:versionCode="1"
android:versionName="1.0" > <uses-sdk android:minSdkVersion="7" /> <application
android:icon="@drawable/ic_launcher"
android:label="@string/app_name" >
<activity
android:label="@string/app_name"
android:name=".Activity03" >
<intent-filter >
<action android:name="android.intent.action.MAIN" /> <category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity android:name=".Resilt" android:label="计算结果"></activity>
</application></manifest>
其实我还有个帖子你也看了 http://topic.csdn.net/u/20111102/23/de735f0e-5ef0-4bd9-b53a-f12a265e4ff7.html?46824
哎 真是纠结了。
哪位大哥肯帮我跑一下指点啊。
邮箱[email protected]
最后注册是<activity android:name=".Result" android:label="计算结果"></activity> 粘错了
是<activity android:name=".result" android:label="计算结果"></activity>
应该这样写:symbol.setText(Activity03.this.getResources().getString(R.string.symbol));