Question

我是android developpement的新手。我只是制作一个简单的项目来保存每次搜索栏移动时输入的文本的字体大小。

我完成了没有错误的项目，但是当我运行应用程序时，它在模拟器中显示错误消息“不幸的是，SharedPreferences已被停止”。

我在下面的链接中也搜索了这个并应用了所有内容，但在我的情况下没有出现这样的错误：

Unfortunately app has stopped in Android Emulator
Unfortunately HelloListView has stopped
Unfortunately, *name of app* has stopped
Unfortunately, MyApp has Stopped In Emulator
unfortunately app has stopped in emulator
unfortunately the application has stoped
Unfortunately Project_Name Has Stopped
"Unfortunately, app name has stopped." android device or emulator

还有更多。

这个项目的LAYOUT文件是（sharedprefer.xml）：

<Seekbar android:id="@+id/sb"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content" />

<TextView
    android:id="@+id/tv"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="@string/hello_world" />

<EditText android:id="@+id/et"
    android:hint="@string/txt"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content" />

<Button
    android:id="@+id/b"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:text="@string/s" />

.Java文件是（Main.java）：

import android.app.Activity; import android.content.SharedPreferences; import android.os.Bundle; import android.view.Menu; import android.view.View; import android.widget.Button; import android.widget.EditText; import android.widget.SeekBar; import android.widget.SeekBar.OnSeekBarChangeListener; import android.widget.Toast;

public class Main扩展Activity {

private SharedPreferences pref;
private String pName = "MyPref";
private EditText et;
private SeekBar sb;
private Button b;

private static final String FONT_SIZE_KEY = "fontsize";
private final static String TEXT_VALUE_KEY = "textvalue";


@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.sharedprefer);

    et = (EditText) findViewById(R.id.et);
    sb = (SeekBar) findViewById(R.id.sb);
    b = (Button) findViewById(R.id.b);

    b.setOnClickListener(new View.OnClickListener(){
        public void onClick(View v){
            pref = getSharedPreferences(pName, MODE_PRIVATE);
            SharedPreferences.Editor editor = pref.edit();
            editor.putFloat(FONT_SIZE_KEY, et.getTextSize());
            editor.putString(TEXT_VALUE_KEY, et.getText().toString());

            editor.commit();

            Toast.makeText(getBaseContext(), "Saved" , Toast.LENGTH_LONG).show();
        }
    });

    pref = getSharedPreferences(pName, MODE_PRIVATE);
    float fontsize = pref.getFloat(FONT_SIZE_KEY, 14);

    sb.setProgress((int)fontsize);
    et.setText(pref.getString(TEXT_VALUE_KEY, ""));
    et.setTextSize(sb.getProgress());

    sb.setOnSeekBarChangeListener(new OnSeekBarChangeListener(){

        @Override
        public void onProgressChanged(SeekBar sbar, int progress, boolean fromUser) {
            // TODO Auto-generated method stub
            et.setTextSize(progress);
        }

        @Override
        public void onStartTrackingTouch(SeekBar seekBar) {
            // TODO Auto-generated method stub

        }

        @Override
        public void onStopTrackingTouch(SeekBar seekBar) {
            // TODO Auto-generated method stub

        }
    });
}

@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;
}

}

我发现LOGCAT中的错误是：

07-17 13:12:18.369: I/Process(576): Sending signal. PID: 576 SIG: 9
07-17 13:12:30.760: D/AndroidRuntime(622): Shutting down VM
07-17 13:12:30.760: W/dalvikvm(622): threadid=1: thread exiting with uncaught exception (group=0x409961f8)
07-17 13:12:30.810: E/AndroidRuntime(622): FATAL EXCEPTION: main
07-17 13:12:30.810: E/AndroidRuntime(622): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.nsa.sharedpreferences/com.nsa.sharedpreferences.Main}: android.view.InflateException: Binary XML file line #7: Error inflating class Seekbar
07-17 13:12:30.810: E/AndroidRuntime(622):  at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1955)
07-17 13:12:30.810: E/AndroidRuntime(622):  at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1980)
07-17 13:12:30.810: E/AndroidRuntime(622):  at android.app.ActivityThread.access$600(ActivityThread.java:122)
07-17 13:12:30.810: E/AndroidRuntime(622):  at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1146)
07-17 13:12:30.810: E/AndroidRuntime(622):  at android.os.Handler.dispatchMessage(Handler.java:99)
07-17 13:12:30.810: E/AndroidRuntime(622):  at android.os.Looper.loop(Looper.java:137)
07-17 13:12:30.810: E/AndroidRuntime(622):  at android.app.ActivityThread.main(ActivityThread.java:4340)
07-17 13:12:30.810: E/AndroidRuntime(622):  at java.lang.reflect.Method.invokeNative(Native Method)
07-17 13:12:30.810: E/AndroidRuntime(622):  at java.lang.reflect.Method.invoke(Method.java:511)
07-17 13:12:30.810: E/AndroidRuntime(622):  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:784)
07-17 13:12:30.810: E/AndroidRuntime(622):  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:551)
07-17 13:12:30.810: E/AndroidRuntime(622):  at dalvik.system.NativeStart.main(Native Method)
07-17 13:12:30.810: E/AndroidRuntime(622): Caused by: android.view.InflateException: Binary XML file line #7: Error inflating class Seekbar
07-17 13:12:30.810: E/AndroidRuntime(622):  at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:691)
07-17 13:12:30.810: E/AndroidRuntime(622):  at android.view.LayoutInflater.rInflate(LayoutInflater.java:739)
07-17 13:12:30.810: E/AndroidRuntime(622):  at android.view.LayoutInflater.inflate(LayoutInflater.java:489)
07-17 13:12:30.810: E/AndroidRuntime(622):  at android.view.LayoutInflater.inflate(LayoutInflater.java:396)
07-17 13:12:30.810: E/AndroidRuntime(622):  at android.view.LayoutInflater.inflate(LayoutInflater.java:352)
07-17 13:12:30.810: E/AndroidRuntime(622):  at com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:251)
07-17 13:12:30.810: E/AndroidRuntime(622):  at android.app.Activity.setContentView(Activity.java:1835)
07-17 13:12:30.810: E/AndroidRuntime(622):  at com.nsa.sharedpreferences.Main.onCreate(Main.java:29)
07-17 13:12:30.810: E/AndroidRuntime(622):  at android.app.Activity.performCreate(Activity.java:4465)
07-17 13:12:30.810: E/AndroidRuntime(622):  at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1049)
07-17 13:12:30.810: E/AndroidRuntime(622):  at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1919)
07-17 13:12:30.810: E/AndroidRuntime(622):  ... 11 more
07-17 13:12:30.810: E/AndroidRuntime(622): Caused by: java.lang.ClassNotFoundException: android.view.Seekbar
07-17 13:12:30.810: E/AndroidRuntime(622):  at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:61)
07-17 13:12:30.810: E/AndroidRuntime(622):  at java.lang.ClassLoader.loadClass(ClassLoader.java:501)
07-17 13:12:30.810: E/AndroidRuntime(622):  at java.lang.ClassLoader.loadClass(ClassLoader.java:461)
07-17 13:12:30.810: E/AndroidRuntime(622):  at android.view.LayoutInflater.createView(LayoutInflater.java:552)
07-17 13:12:30.810: E/AndroidRuntime(622):  at android.view.LayoutInflater.onCreateView(LayoutInflater.java:636)
07-17 13:12:30.810: E/AndroidRuntime(622):  at com.android.internal.policy.impl.PhoneLayoutInflater.onCreateView(PhoneLayoutInflater.java:66)
07-17 13:12:30.810: E/AndroidRuntime(622):  at android.view.LayoutInflater.onCreateView(LayoutInflater.java:653)
07-17 13:12:30.810: E/AndroidRuntime(622):  at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:678)
07-17 13:12:30.810: E/AndroidRuntime(622):  ... 21 more

请告诉我它的解决方案是什么。

Answer 1

更改

<Seekbar android:id="@+id/sb"

带

<SeekBar android:id="@+id/sb"

b必须是大写B

不幸的是，“Project_Name”在模拟器中一直是Stopeed Error

1 个答案: