我在密码字段中使用 TextInputLayout(和 TextInputEditText)，但当我按下平板电脑上的切换按钮时，我的应用程序出现故障。
我在其他设备上进行了测试，该应用运行得非常棒 这里有一些信息:
致力于
- 连结 5 - 6.0.1
- Positivo S440 - 4.4.2
- 三星 Galaxy Tab SM-P550 - 6.0.1
崩溃于
- 平板电脑:三星 SM-T530
- 安卓:5.0.2
- Android 支持设计版本:25.3.1
我的 XML
android.support.design.widget.TextInputLayout
android:id="@+id/til_password"
style="@style/Text"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="center_vertical"
android:layout_marginLeft="16dp"
android:layout_marginStart="16dp"
android:hint="@string/lbl_password"
app:passwordToggleEnabled="true"
app:passwordToggleTint="@color/theme_accent"
android.support.design.widget.TextInputEditText
android:id="@+id/inp_password"
style="@style/Text"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="@null"
android:imeOptions="actionDone"
android:inputType="textPassword"
android:textColor="@color/theme_accent"
android:textSize="@dimen/text_size_subhead"
android.support.design.widget.TextInputLayout
My code
public class SyncFragment extends GenericFragment implements TaskCallback,
View.OnClickListener, WifiAdapter.WifiListener, BackIntercepter, TextView.OnEditorActionListener {
<b>private TextInputEditText mInpPassword;</b>
@Override
public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
super.onCreateView(inflater, container, savedInstanceState);
View view = inflater.inflate(R.layout.layout_sync, container, false);
ButterKnife.bind(this, view);
<b>findViews(view);</b>
if (getArguments() != null) {
List wifis = getArguments().getParcelableArrayList(Extras.WIFIS);
if(wifis != null) {
Log.d("HACL.TEST", "content extra info: " + Extras.WIFIS);
Log.d("HACL.TEST", "content wifis: " + wifis.toString());
updateSpinner(wifis);
networkId = getArguments().getInt(Extras.NETWORK_ID);
airConWifiSSID = getArguments().getString(Extras.AIR_CON_WIFI);
}
}
<b>setListeners();</b>
return view;
}
@Override
public void onViewCreated(View view, @Nullable Bundle savedInstanceState) {
super.onViewCreated(view, savedInstanceState);
try {
// If return from SyncingFragment, load which Wi-Fi network was selected and show
// credential screen instead of Wi-Fi list screen
if(getArguments().getBoolean(Extras.BACK_FROM_SYNCING)) {
if (getArguments().getParcelable(Extras.WIFI) != null) {
Wifi wifi = getArguments().getParcelable(Extras.WIFI);
mOutNetwork.setText(wifi.getSsid());
mOutNetwork.setTextColor(getResources().getColor(R.color.theme_accent));
mOutNetwork.setAlpha(1);
mOutNetwork.setTag(wifi);
Typeface face = Typeface.createFromAsset(getContext().getAssets(), "fonts/FonteX-Regular.ttf");
mOutNetwork.setTypeface(face);
<b>mInpPassword.setTypeface(face);</b>
}
showCredentials();
}
else {
showList();
}
} catch (Exception e) {
e.printStackTrace();
}
}
private void findViews(View view) {
Typeface face = Typeface.createFromAsset(getContext().getAssets(),"fonts/FontX-Regular.ttf");
<b>mInpPassword = (TextInputEditText) view.findViewById(R.id.inp_password);
mInpPassword.setTypeface(face);</b>
.....
}
private void finishSync() {
if (mOutNetwork.getTag() == null) {
Toast.makeText(getActivity(), R.string.msg_select_an_network, Toast.LENGTH_SHORT).show();
return;
}
<b>String password = mInpPassword.getText().toString();</b>
if (verifyPassword(password)) {
Wifi wifi = (Wifi) mOutNetwork.getTag();
wifi.setPassphrase(password);
Bundle bundle = new Bundle();
bundle.putParcelable(Extras.WIFI, wifi);
bundle.putParcelableArrayList(Extras.WIFIS, new ArrayList(wifiOnSpinner));
bundle.putInt(Extras.NETWORK_ID, networkId);
bundle.putString(Extras.AIR_CON_WIFI, airConWifiSSID);
getGenericActivity().openMainFragment(SyncingFragment.class, bundle);
} else {
Toast.makeText(getActivity(), R.string.msg_password_invalid, Toast.LENGTH_SHORT).show();
}
}
@Override
public void onClick(View v) {
if (v.equals(mLyNetwork)) {
try {
CommonUtils.hideInputKeyboard(getActivity());
} catch (RuntimeException ignored) {
}
showList();
}
if (v.equals(mBtnSync)) {
<b>finishSync();</b>
}
}
@Override
public void onWifiSelected(Wifi wifi) {
mOutNetwork.setText(wifi.getSsid());
mOutNetwork.setTextColor(getResources().getColor(R.color.theme_accent));
mOutNetwork.setAlpha(1);
mOutNetwork.setTag(wifi);
Typeface face = Typeface.createFromAsset(getContext().getAssets(),"fonts/ElectroluxSans-Regular.ttf");
mOutNetwork.setTypeface(face);
mInpPassword.setTypeface(face);
if (wifi.getSecurityType() > 0) {
<b>showCredentials();</b>
} else {
<b>finishSync();</b>
}
}
@Override
public boolean onEditorAction(TextView textView, int i, KeyEvent keyEvent) {
Wifi tag = (Wifi) mOutNetwork.getTag();
// If Wi-Fi network has some security type, minimum password length is:
// For a 64 bit WEP network the password is 5-characters.
// For a 128 bit WEP network the password is 13-characters.
// WPA uses either a passphrase (a shared secret) that is comprised of 8 to 63 characters
if (textView.getText() != null
&& textView.getText().length() 0) {
mBtnSync.setEnabled(false);
} else {
mBtnSync.setEnabled(true);
}
if (i == EditorInfo.IME_ACTION_DONE && mBtnSync.isEnabled()) {
<b>finishSync();</b>
return true;
}
return false;
}
public void showCredentials() {
int duration = getResources().getInteger(android.R.integer.config_mediumAnimTime);
lyCredentials.setVisibility(View.VISIBLE);
ViewCompat.animate(listNetwork).alpha(0f)
.setInterpolator(new DecelerateInterpolator())
.setDuration(duration)
.setListener(new ViewPropertyAnimatorListenerAdapter() {
@Override
public void onAnimationEnd(View view) {
listNetwork.setVisibility(View.GONE);
}
})
.start();
ViewCompat.animate(lyCredentials).alpha(1f)
.setStartDelay(duration)
.setInterpolator(new DecelerateInterpolator())
.setListener(new ViewPropertyAnimatorListenerAdapter() {
@Override
public void onAnimationEnd(View view) {
<b>mInpPassword.requestFocus();
CommonUtils.showInputKeyboard(getActivity(), mInpPassword);</b>
}
})
.setDuration(duration)
.start();
mBtnSync.setEnabled(false);
}
@Override
public void onWifiSelected(Wifi wifi) {
mOutNetwork.setText(wifi.getSsid());
mOutNetwork.setTextColor(getResources().getColor(R.color.theme_accent));
mOutNetwork.setAlpha(1);
mOutNetwork.setTag(wifi);
Typeface face = Typeface.createFromAsset(getContext().getAssets(),"fonts/FontX-Regular.ttf");
mOutNetwork.setTypeface(face);
<b>mInpPassword.setTypeface(face);</b>
if (wifi.getSecurityType() > 0) {
<b>showCredentials();</b>
} else {
finishSync();
}
}
private void setListeners() {
mLyNetwork.setOnClickListener(this);
mInpPassword.setOnEditorActionListener(this);
mBtnSync.setOnClickListener(this);
}
}
这是日志
05-15 09:22:31.199 20164-20164/com.xxxxxxx.yyyyyyyy.zzzz E/AndroidRuntime: FATAL EXCEPTION:
main
Process: com.xxxxxxxx.yyyyyyyyy.zzzzz, PID: 20164
java.lang.NullPointerException: Attempt to invoke virtual method 'int java.util.ArrayList.size()' on a null object reference
at android.graphics.drawable.AnimatedVectorDrawable.start(AnimatedVectorDrawable.java:423)
at android.graphics.drawable.AnimatedStateListDrawable$AnimatedVectorDrawableTransition.start(AnimatedStateListDrawable.java:322)
at android.graphics.drawable.AnimatedStateListDrawable.selectTransition(AnimatedStateListDrawable.java:226)
at android.graphics.drawable.AnimatedStateListDrawable.onStateChange(AnimatedStateListDrawable.java:153)
at android.graphics.drawable.Drawable.setState(Drawable.java:644)
at android.support.v4.graphics.drawable.DrawableWrapperGingerbread.setState(DrawableWrapperGingerbread.java:145)
at android.support.v4.graphics.drawable.DrawableWrapperLollipop.setState(DrawableWrapperLollipop.java:95)
at android.widget.ImageView.drawableStateChanged(ImageView.java:1129)
at android.support.v7.widget.AppCompatImageButton.drawableStateChanged(AppCompatImageButton.java:149)
at android.view.View.refreshDrawableState(View.java:17099)
at android.support.design.widget.CheckableImageButton.setChecked(CheckableImageButton.java:75)
at android.support.design.widget.TextInputLayout.passwordVisibilityToggleRequested(TextInputLayout.java:1302)
at android.support.design.widget.TextInputLayout$4.onClick(TextInputLayout.java:1076)
at android.view.View.performClick(View.java:5214)
at android.view.View$PerformClick.run(View.java:20978)
at android.os.Handler.handleCallback(Handler.java:739)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:145)
at android.app.ActivityThread.main(ActivityThread.java:6134)
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1399)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1194)
如你所见，问题出在android支持设计库
我在下面找到了这个链接，我们有更多的开发者遇到同样的问题。
Google Issue Tracker: Error Support Design
如果有人知道一些解决方法或解决方案，请告诉我们。
最佳答案
{
//...
EditText et;
//...
//left, top, right, bottom
et.setCompoundDrawablesWithIntrinsicBounds(0, 0, R.drawable.some_icon, 0);
et.setOnTouchListener(someTouchListener);
//...
}
private View.OnTouchListener someTouchListener = new OnTouchListener() {
final int DRAWABLE_LEFT = 0;
final int DRAWABLE_TOP = 1;
final int DRAWABLE_RIGHT = 2;
final int DRAWABLE_BOTTOM = 3;
@Override
public boolean onTouch(View v, MotionEvent event) {
if (event.getAction() == MotionEvent.ACTION_UP) {
if (event.getRawX() >= (v.getRight() - ((EditText) v).getCompoundDrawables()[DRAWABLE_RIGHT].getBounds().width())) {
//TODO Drawable click here
return true;
}
}
return false;
}
};
关于android - 单击切换按钮时 TextInputLayout (TextInputEditText) NullpointerException，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/43980107/