[英]unfortunately app has stopped , android
i have given the code here .我在这里给出了代码。 and when i run it in genymotion it just stops working.
当我在 genymotion 中运行它时,它就停止工作了。 please help .
请帮忙 。 i dont see any display in logcat also .
我也没有在 logcat 中看到任何显示。 it remains blank and the emulator only shows an error that is "unfortulately, SharedprefrencEexample has stoped working. and the app dont even starts. so i dont get any clue of what might be the error in this code . here i have used the reference creation at the start and i think it might be the error. so please do see the code and help me. thanks.
它保持空白,模拟器只显示一个错误,“不幸的是,SharedprefrencEexample 已停止工作。应用程序甚至没有启动。所以我不知道此代码中可能是什么错误。在这里我使用了参考创建一开始,我认为这可能是错误。所以请查看代码并帮助我。谢谢。
Main_Activity
主要活动
package com.example.sharedprefrenceexample;
import android.app.Activity;
import android.content.Intent;
import android.content.SharedPreferences;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
public class MainActivity extends Activity {
EditText name,phone,email;
Button submit;
Intent intent;
SharedPreferences sharedPreferences;
SharedPreferences.Editor editor;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
name=(EditText) findViewById(R.id.editText1);
phone=(EditText) findViewById(R.id.editText2);
email=(EditText) findViewById(R.id.editText3);
submit=(Button) findViewById(R.id.button1);
submit.setText("@string/button_name_activity_one");
name.setHint("name");
phone.setHint("phone");
email.setHint("email id");
sharedPreferences=getSharedPreferences("@string/database_name", MODE_PRIVATE);
editor=sharedPreferences.edit();
submit.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View arg0) {
// TODO Auto-generated method stub
editor.putString("name", name.getText().toString());
editor.putString("phone", phone.getText().toString());
editor.commit();
intent=new Intent(MainActivity.this,Secondactivity.class);
intent.putExtra("email", email.getText().toString());
startActivity(intent);
}
});
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
}
activity_main.xml
活动_main.xml
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
tools:context="com.example.sharedprefrenceexample.MainActivity" >
<EditText
android:id="@+id/editText1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true"
android:ems="10" >
<requestFocus />
</EditText>
<EditText
android:id="@+id/editText2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_below="@+id/editText1"
android:ems="10"
android:inputType="numberPassword" />
<EditText
android:id="@+id/editText3"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignLeft="@+id/editText2"
android:layout_below="@+id/editText2"
android:ems="10"
android:inputType="textEmailAddress" />
<Button
android:id="@+id/button1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_alignParentRight="true"
android:text="@string/button_name_activity_one" />
</RelativeLayout>
secondactivity
第二个活动
package com.example.sharedprefrenceexample;
import android.app.Activity;
import android.content.Intent;
import android.content.SharedPreferences;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.widget.TextView;
public class Secondactivity extends Activity {
TextView result;
SharedPreferences sharedPreferences;
Intent intent;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_secondactivity);
result=(TextView) findViewById(R.id.textView1);
sharedPreferences=getSharedPreferences("database", MODE_PRIVATE);
String res = null;
res=res+sharedPreferences.getString("name", "no name");
res=res+sharedPreferences.getString("phone", "no phone");
intent=getIntent();
res=res+intent.getStringExtra("email");
result.setText(res);
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.secondactivity, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
}
activity_secondactivity.xml
activity_secondactivity.xml
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
tools:context="com.example.sharedprefrenceexample.Secondactivity" >
<TextView
android:id="@+id/textView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true"
android:text="Large Text"
android:textAppearance="?android:attr/textAppearanceLarge" />
</RelativeLayout>
submit.setText("@string/button_name_activity_one");
// (...)
sharedPreferences=getSharedPreferences("@string/database_name", MODE_PRIVATE);
That syntax is only valid in XML.该语法仅在 XML 中有效。 In Java code, to use a string reference you should use
在 Java 代码中,要使用字符串引用,您应该使用
submit.setText(R.string.button_name_activity_one);
So fix those string references and it should work.所以修复这些字符串引用,它应该可以工作。
More info: String resources @ Android Developers更多信息: 字符串资源@Android 开发者
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