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我是新來的Android編程，有時我不知道我的項目有什麼問題，它會粉碎我觸摸按鈕的那一刻。
有什麼不對嗎？我的Android應用程序崩潰的時刻，我觸摸一個按鈕
這是我的主要活動
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
MenuInflater inflater = getMenuInflater();
inflater.inflate(R.menu.menu_main, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
int id = item.getItemId();
if (id==R.id.menu_home)
if (id==R.id.menu_search)
if (id==R.id.menu_contact)
if (id==R.id.menu_info)
if (id==R.id.menu_close)
finish();
return super.onOptionsItemSelected(item);
}
public void btn_next1 (View v) {
Intent intent = new Intent(MainActivity.this, Page1.class);
startActivity(intent);
}
public void btn_next2 (View v) {
Intent intent = new Intent(MainActivity.this, Page2.class);
startActivity(intent);
}
public void btn_next3 (View v) {
Intent intent = new Intent(MainActivity.this, Page3.class);
startActivity(intent);
}
public void btn_next4 (View v) {
Intent intent = new Intent(MainActivity.this, Page4.class);
startActivity(intent);
}
public void btn_next5 (View v) {
Intent intent = new Intent(MainActivity.this, Page5.class);
startActivity(intent);
}
public void btn_next6 (View v) {
Intent intent = new Intent(MainActivity.this, Page6.class);
startActivity(intent);
}
public void btn_next10 (View v) {
Intent intent = new Intent(MainActivity.this, Page10.class);
startActivity(intent);
}
}
，這裏是我的activity_main.xml中
<Button
android:id="@+id/button"
android:layout_width="89dp"
android:layout_height="85dp"
android:background="@drawable/page10"
android:gravity="center"
android:onClick="btn_next10"
app:layout_constraintTop_toTopOf="parent"
android:layout_marginTop="8dp"
app:layout_constraintBottom_toBottomOf="parent"
android:layout_marginBottom="8dp"
android:layout_marginLeft="8dp"
app:layout_constraintLeft_toLeftOf="parent"
android:layout_marginRight="8dp"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintHorizontal_bias="0.028"
app:layout_constraintVertical_bias="0.909" />
<Button
android:id="@+id/button7"
android:layout_width="89dp"
android:layout_height="85dp"
android:background="@drawable/page6"
android:gravity="center"
android:onClick="btn_next6"
app:layout_constraintTop_toTopOf="parent"
android:layout_marginTop="8dp"
app:layout_constraintBottom_toBottomOf="parent"
android:layout_marginBottom="8dp"
android:layout_marginRight="8dp"
app:layout_constraintRight_toRightOf="parent"
android:layout_marginLeft="8dp"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintHorizontal_bias="0.971"
app:layout_constraintVertical_bias="0.456" />
<Button
android:id="@+id/button6"
android:layout_width="89dp"
android:layout_height="85dp"
android:background="@drawable/page5"
android:gravity="center"
android:onClick="btn_next5"
app:layout_constraintTop_toTopOf="parent"
android:layout_marginTop="8dp"
app:layout_constraintBottom_toBottomOf="parent"
android:layout_marginBottom="8dp"
android:layout_marginRight="8dp"
app:layout_constraintRight_toRightOf="parent"
android:layout_marginLeft="8dp"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintHorizontal_bias="0.501"
app:layout_constraintVertical_bias="0.456" />
<Button
android:id="@+id/button5"
android:layout_width="89dp"
android:layout_height="85dp"
android:background="@drawable/page4"
android:gravity="center"
android:onClick="btn_next4"
android:layout_marginLeft="8dp"
app:layout_constraintLeft_toLeftOf="parent"
android:layout_marginRight="8dp"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toTopOf="parent"
android:layout_marginTop="8dp"
app:layout_constraintBottom_toBottomOf="parent"
android:layout_marginBottom="8dp"
app:layout_constraintHorizontal_bias="0.028"
app:layout_constraintVertical_bias="0.456" />
<Button
android:id="@+id/button4"
android:layout_width="89dp"
android:layout_height="85dp"
android:background="@drawable/page3"
android:gravity="center"
android:onClick="btn_next3"
app:layout_constraintTop_toTopOf="parent"
android:layout_marginTop="8dp"
app:layout_constraintBottom_toBottomOf="parent"
android:layout_marginBottom="8dp"
android:layout_marginRight="8dp"
app:layout_constraintRight_toRightOf="parent"
android:layout_marginLeft="8dp"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintHorizontal_bias="0.971"
app:layout_constraintVertical_bias="0.129" />
<Button
android:id="@+id/button3"
android:layout_width="89dp"
android:layout_height="85dp"
android:background="@drawable/page2"
android:gravity="center"
android:onClick="btn_next2"
app:layout_constraintTop_toTopOf="parent"
android:layout_marginTop="8dp"
app:layout_constraintBottom_toBottomOf="parent"
android:layout_marginBottom="8dp"
android:layout_marginRight="8dp"
app:layout_constraintRight_toRightOf="parent"
android:layout_marginLeft="8dp"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintHorizontal_bias="0.501"
app:layout_constraintVertical_bias="0.129" />
<Button
android:id="@+id/button2"
android:layout_width="89dp"
android:layout_height="85dp"
android:background="@drawable/page1"
android:gravity="center"
android:onClick="btn_next1"
app:layout_constraintVertical_chainStyle="spread"
android:layout_marginLeft="8dp"
app:layout_constraintLeft_toLeftOf="parent"
android:layout_marginRight="8dp"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toTopOf="parent"
android:layout_marginTop="8dp"
app:layout_constraintBottom_toBottomOf="parent"
android:layout_marginBottom="8dp"
app:layout_constraintHorizontal_bias="0.028"
app:layout_constraintVertical_bias="0.129" />
</android.support.constraint.ConstraintLayout>
你能幫助我的傢伙？
你可以添加logcat –
'你能幫助我嗎？'不是沒有看到錯誤日誌。 –