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我无法让我的应用程序运行！它没有编译错误，安装完美。但是当我单击自定义按钮时，应用程序会停止。我复制了整个 java 和 xml 文件并使用一个 TextView 进行了一个简单的活动，并且它有效。它进入活动并显示 TextView。下面是 java、xml 和 logcat 代码：

package l.pocketformulas;

import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.view.Window;
import android.view.WindowManager;
import android.widget.Button;


public class Formulas extends Activity {

Button bAlgebra, bTrigonometry, bCalculus, bGeometry;


@Override
protected void onCreate(Bundle savedInstanceState) {
    // TODO Auto-generated method stub
    super.onCreate(savedInstanceState);

    // FULL SCREEN & HIDE APP TITLE
    requestWindowFeature(Window.FEATURE_NO_TITLE);
    getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
            WindowManager.LayoutParams.FLAG_FULLSCREEN);

    setContentView(R.layout.formulas);

    initVars();

    bAlgebra.setOnClickListener(new View.OnClickListener() {

        @Override
        public void onClick(View v) {
            // TODO Auto-generated method stub
            Intent algebraInt = new Intent("android.intent.action.ALGEBRA");
            startActivity(algebraInt);
        }
    });
    bTrigonometry.setOnClickListener(new View.OnClickListener() {

        @Override
        public void onClick(View v) {
            // TODO Auto-generated method stub
            Intent trigonometryInt = new Intent(
                    "android.intent.action.TRIGONOMETRY");
            startActivity(trigonometryInt);
        }
    });
    bGeometry.setOnClickListener(new View.OnClickListener() {

        @Override
        public void onClick(View v) {
            // TODO Auto-generated method stub
            Intent geometryInt = new Intent(
                    "android.intent.action.GEOMETRY");
            startActivity(geometryInt);
        }
    });
    bCalculus.setOnClickListener(new View.OnClickListener() {

        @Override
        public void onClick(View v) {
            // TODO Auto-generated method stub
            Intent calculusInt = new Intent(
                    "android.intent.action.CALCULUS");
            startActivity(calculusInt);
        }
    });

}

private void initVars() {
    // TODO Auto-generated method stub
    bAlgebra = (Button) findViewById(R.id.bAlgebra);
    bTrigonometry = (Button) findViewById(R.id.bTrigonometry);
    bCalculus = (Button) findViewById(R.id.bCalculus);
    bGeometry = (Button) findViewById(R.id.bGeometry);
}
}

这是 XML 代码：

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@drawable/bgr"
android:orientation="vertical" >

<include layout="@layout/selectimg"/>

<LinearLayout
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:orientation="horizontal"
    android:weightSum="100" >

    <Button
        android:id="@+id/bAlgebra"
        android:layout_height="148dp"
        android:layout_weight="50"
        android:background="@drawable/algebra" />

    <Button
        android:id="@+id/bGeometry"
        android:layout_height="148dp"
        android:layout_weight="50"
        android:background="@drawable/geometry" />
</LinearLayout>

<LinearLayout
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:gravity="center"
    android:orientation="horizontal"
    android:weightSum="100" >

    <TextView
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:layout_weight="50"
        android:gravity="center"
        android:text="@string/algebra"
        android:textColor="@android:color/holo_red_dark"
        android:textSize="25sp" />

    <TextView
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:layout_weight="50"
        android:gravity="center"
        android:text="@string/geometry"
        android:textColor="@android:color/holo_red_dark"
        android:textSize="25sp" />
</LinearLayout>

<LinearLayout
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:orientation="horizontal"
    android:weightSum="100" >

    <Button
        android:id="@+id/bTrigonometry"
        android:layout_height="148dp"
        android:layout_weight="50"
        android:background="@drawable/trigonometry" />

    <Button
        android:id="@+id/bCalculus"
        android:layout_height="148dp"
        android:layout_weight="50"
        android:background="@drawable/calculus" />
</LinearLayout>

<LinearLayout
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:orientation="horizontal"
    android:weightSum="100" >

    <TextView
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:layout_weight="50"
        android:gravity="center"
        android:text="@string/trigonometry"
        android:textColor="@android:color/holo_red_dark"
        android:textSize="25sp" />

    <TextView
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:layout_weight="50"
        android:gravity="center"
        android:text="@string/calculus"
        android:textColor="@android:color/holo_red_dark"
        android:textSize="25sp" />
</LinearLayout>

这是Logcat：

06-05 00:17:25.090: E/Trace(24203): error opening trace file: No such file or directory (2)
06-05 00:17:25.450: I/Adreno200-EGL(24203): <qeglDrvAPI_eglInitialize:299>: EGL 1.4 QUALCOMM build: AU_LINUX_ANDROID_JB_REL_2.0.3.04.01.02.21.081_msm7627a_JB_REL_2.0.3_CL2820657_release_AU (CL2820657)
 06-05 00:17:25.450: I/Adreno200-EGL(24203): Build Date: 01/22/13 Tue
 06-05 00:17:25.450: I/Adreno200-EGL(24203): Local Branch: 
 06-05 00:17:25.450: I/Adreno200-EGL(24203): Remote Branch: quic/jb_rel_2.0.3
 06-05 00:17:25.450: I/Adreno200-EGL(24203): Local Patches: NONE
 06-05 00:17:25.450: I/Adreno200-EGL(24203): Reconstruct Branch: AU_LINUX_ANDROID_JB_REL_2.0.3.04.01.02.21.081 +  NOTHING
 06-05 00:17:25.940: E/copybit(24203): Error opening frame buffer errno=13 (Permission denied)
 06-05 00:17:25.940: W/Adreno200-EGLSUB(24203): <updater_create_surface_state:342>: updater_create_surface_state failed to open copybit, error: -13
 06-05 00:17:25.960: D/memalloc(24203): ion: Mapped buffer base:0x53fbc000 size:1536000 offset:0 fd:61
 06-05 00:17:25.960: D/memalloc(24203): ion: Mapped buffer base:0x40117000 size:4096 offset:0 fd:63
 06-05 00:17:26.300: D/memalloc(24203): ion: Mapped buffer base:0x544dc000 size:1536000 offset:0 fd:66
 06-05 00:17:26.300: D/memalloc(24203): ion: Mapped buffer base:0x4011d000 size:4096 offset:0 fd:68
 06-05 00:17:28.660: E/copybit(24203): Error opening frame buffer errno=13 (Permission denied)
 06-05 00:17:28.660: W/Adreno200-EGLSUB(24203): <updater_create_surface_state:342>: updater_create_surface_state failed to open copybit, error: -13
 06-05 00:17:28.670: D/memalloc(24203): ion: Mapped buffer base:0x54753000 size:1536000 offset:0 fd:71
 06-05 00:17:28.670: D/memalloc(24203): ion: Mapped buffer base:0x404c5000 size:4096 offset:0 fd:73
 06-05 00:17:28.790: D/memalloc(24203): ion: Mapped buffer base:0x54de1000 size:1536000 offset:0 fd:75
 06-05 00:17:28.790: D/memalloc(24203): ion: Mapped buffer base:0x4089a000 size:4096 offset:0 fd:77
 06-05 00:17:28.820: D/memalloc(24203): ion: Unmapping buffer  base:0x53fbc000 size:1536000
 06-05 00:17:28.820: D/memalloc(24203): ion: Unmapping buffer  base:0x40117000 size:4096
 06-05 00:17:28.820: D/memalloc(24203): ion: Unmapping buffer  base:0x544dc000 size:1536000
 06-05 00:17:28.820: D/memalloc(24203): ion: Unmapping buffer  base:0x4011d000 size:4096
4

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