嘿,我不喜欢Android的TimePicker(它非常大)所以我自己创建了一个,但每次我尝试添加它时,它都会崩溃我的应用程序。我尝试以相同的方式添加TimePicker并且它正在工作。 这是代码,3个类,内部类创建数字滚动条,第二个类创建一个带有两个数字滚动条的时间选择器,一个用于小时,一个用于分钟。第三个类是针对应用程序,并为开放时间创建一组两个时间选择器,并为关闭时间创建一个。
公共类openCloseTimesPicker扩展LinearLayout { private smallTimePicker openTimePicker; private smallTimePicker closeTimePicker;
public openCloseTimesPicker(Context context) {
super(context);
setOrientation(HORIZONTAL);
setLayoutParams(new LinearLayout.LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.WRAP_CONTENT));
TextView from = new TextView(context);
TextView until = new TextView(context);
from.setGravity(Gravity.CENTER_VERTICAL);
from.setLayoutParams(new LinearLayout.LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT));
from.setTextSize(TypedValue.COMPLEX_UNIT_DIP, 25.0f);
from.setText("מ:");
until.setGravity(Gravity.CENTER_VERTICAL);
until.setLayoutParams(new LinearLayout.LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT));
until.setTextSize(TypedValue.COMPLEX_UNIT_DIP, 25.0f);
until.setText("עד:");
addView(closeTimePicker);
addView(until);
addView(openTimePicker);
addView(from);
}
public String getOpenHour(){
return openTimePicker.getHour();
}
public String getCloseHour(){
return closeTimePicker.getHour();
}
private class smallTimePicker extends LinearLayout{
private digitsScroller minutes;
private digitsScroller hours;
public smallTimePicker(Context context) {
super(context);
minutes = new digitsScroller(context, 0, 59);
hours = new digitsScroller(context, 0, 23);
setLayoutParams(new LinearLayout.LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT));
setGravity(Gravity.CENTER_HORIZONTAL);
// Stacks elements vertically
setOrientation(HORIZONTAL);
TextView colon = new TextView(context);
colon.setGravity(Gravity.CENTER_VERTICAL);
colon.setLayoutParams(new LinearLayout.LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT));
colon.setTextSize(TypedValue.COMPLEX_UNIT_DIP, 25.0f);
colon.setText(':');
addView(hours);
addView(colon);
addView(minutes);
}
public String getHour(){
return hours.getDigits() + ':' + minutes.getDigits();
}
private class digitsScroller extends LinearLayout{
private ImageView increase;
private ImageView decrease;
private TextView digitDisplay;
private int minimum, maximum;
public digitsScroller(Context context, int minimum, int maximum) {
super(context);
this.minimum = minimum;
this.maximum = maximum;
setLayoutParams(new LinearLayout.LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT));
setGravity(Gravity.CENTER_HORIZONTAL);
// Stacks elements vertically
setOrientation(VERTICAL);
initializeViews(context);
addView(increase);
addView(digitDisplay);
addView(decrease);
}
private void initializeViews(Context context) {
// Layout settings
LayoutParams childParams = new LinearLayout.LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT);
// Setting the increase button
increase = new ImageView(context);
increase.setLayoutParams(childParams);
increase.setImageResource(R.drawable.add_increase);
increase.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
// Evaluate whether the digit display may be increased further
int currentValue = Integer.valueOf(digitDisplay.getText().toString());
currentValue = currentValue < maximum ? currentValue + 1 : minimum;
updateDigitValue(currentValue);
}
});
// Setting the decrease button
decrease = new ImageView(context);
decrease.setLayoutParams(childParams);
decrease.setImageResource(R.drawable.add_decrease);
decrease.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
// Evaluate whether the digit display may be increased further
int currentValue = Integer.valueOf(digitDisplay.getText().toString());
currentValue = currentValue > minimum ? currentValue - 1 : maximum;
updateDigitValue(currentValue);
}
});
// Setting the digits display
digitDisplay = new TextView(context);
digitDisplay.setGravity(Gravity.CENTER_HORIZONTAL);
digitDisplay.setLayoutParams(childParams);
digitDisplay.setTextSize(TypedValue.COMPLEX_UNIT_DIP, 25.0f);
digitDisplay.setText('0'+minimum);
}
private void updateDigitValue(int newValue) {
digitDisplay.setText((newValue > 9) ? Integer.toString(newValue) : '0'+ Integer.toString(newValue));
digitDisplay.postInvalidate();
}
public String getDigits(){
String digits = digitDisplay.getText().toString();
return (digits.length()>1) ? digits : '0'+digits;
}
}
}
}
这是将视图添加到布局的代码:
else if(v.getId() == R.id.add_open_time){
table.addView(new openCloseTimesPicker(AddShopActivity.this));
}
我会再次这样说,当我尝试这样的事情时,它正在发挥作用:
else if(v.getId() == R.id.add_open_time){
table.addView(new TimePicker(AddShopActivity.this));
}
这是使用adb logcat的日志:
D/AndroidRuntime( 227): Shutting down VM
W/dalvikvm( 227): threadid=3: thread exiting with uncaught exception (group=0x4
001aa28)
E/AndroidRuntime( 227): Uncaught handler: thread main exiting due to uncaught e
xception
E/AndroidRuntime( 227): java.lang.NullPointerException
E/AndroidRuntime( 227): at android.view.ViewGroup.addView(ViewGroup.java
:1701)
E/AndroidRuntime( 227): at android.view.ViewGroup.addView(ViewGroup.java
:1688)
E/AndroidRuntime( 227): at elad.openapp.AddShopActivity$openCloseTimesPi
cker.<init>(AddShopActivity.java:99)
E/AndroidRuntime( 227): at elad.openapp.AddShopActivity.onClick(AddShopA
ctivity.java:72)
E/AndroidRuntime( 227): at android.view.View.performClick(View.java:2344
)
E/AndroidRuntime( 227): at android.view.View.onTouchEvent(View.java:4133
)
E/AndroidRuntime( 227): at android.widget.TextView.onTouchEvent(TextView
.java:6510)
E/AndroidRuntime( 227): at android.view.View.dispatchTouchEvent(View.jav
a:3672)
E/AndroidRuntime( 227): at android.view.ViewGroup.dispatchTouchEvent(Vie
wGroup.java:882)
E/AndroidRuntime( 227): at android.view.ViewGroup.dispatchTouchEvent(Vie
wGroup.java:882)
E/AndroidRuntime( 227): at android.view.ViewGroup.dispatchTouchEvent(Vie
wGroup.java:882)
E/AndroidRuntime( 227): at android.view.ViewGroup.dispatchTouchEvent(Vie
wGroup.java:882)
E/AndroidRuntime( 227): at com.android.internal.policy.impl.PhoneWindow$
DecorView.superDispatchTouchEvent(PhoneWindow.java:1712)
E/AndroidRuntime( 227): at com.android.internal.policy.impl.PhoneWindow.
superDispatchTouchEvent(PhoneWindow.java:1202)
E/AndroidRuntime( 227): at android.app.Activity.dispatchTouchEvent(Activ
ity.java:1987)
E/AndroidRuntime( 227): at com.android.internal.policy.impl.PhoneWindow$
DecorView.dispatchTouchEvent(PhoneWindow.java:1696)
E/AndroidRuntime( 227): at android.view.ViewRoot.handleMessage(ViewRoot.
java:1658)
E/AndroidRuntime( 227): at android.os.Handler.dispatchMessage(Handler.ja
va:99)
E/AndroidRuntime( 227): at android.os.Looper.loop(Looper.java:123)
E/AndroidRuntime( 227): at android.app.ActivityThread.main(ActivityThrea
d.java:4203)
E/AndroidRuntime( 227): at java.lang.reflect.Method.invokeNative(Native
Method)
E/AndroidRuntime( 227): at java.lang.reflect.Method.invoke(Method.java:5
21)
E/AndroidRuntime( 227): at com.android.internal.os.ZygoteInit$MethodAndA
rgsCaller.run(ZygoteInit.java:791)
E/AndroidRuntime( 227): at com.android.internal.os.ZygoteInit.main(Zygot
eInit.java:549)
E/AndroidRuntime( 227): at dalvik.system.NativeStart.main(Native Method)
I/Process ( 44): Sending signal. PID: 227 SIG: 3
I/dalvikvm( 227): threadid=7: reacting to signal 3
E/dalvikvm( 227): Unable to open stack trace file '/data/anr/traces.txt': Permi
ssion denied
谢谢,很高兴!
答案 0 :(得分:0)
在openCloseTimesPicker
构造函数中。似乎closeTimePicker
和openTimePicker
未初始化。
addView(closeTimePicker);
addView(until);
addView(openTimePicker);
addView(from);
答案 1 :(得分:0)
您发布的代码中没有任何地方您实际创建了openTimePicker和closeTimePicker。我看到变量声明,但没有调用创建实例。
无需创建对
的调用addView(closeTimePicker);
只是将null传递给addView